Team:UNITN-Trento/Protocols

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<!--Protocol page-->
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<div class="tn-description">
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<div class="container">
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<div class="sheet"></html>
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</div>
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-
</html>
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<h2>PCRs</h2>
-
<h2>PCRs</h2>
+
<html><a href="https://www.neb.com/tools-and-resources/interactive-tools/tm-calculator">Tm Calculator (1)</a><br/>
 +
<a href="http://eu.idtdna.com/analyzer/applications/oligoanalyzer/">Tm Calculator (2)</a></html>
-
<html><a href="https://www.neb.com/tools-and-resources/interactive-tools/tm-calculator">Tm Calculator (1)</a><br/>
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{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|RBC Taq DNA Polymerase Protocol V2.0|<html>
-
<a href="http://eu.idtdna.com/analyzer/applications/oligoanalyzer/">Tm Calculator (2)</a></html>
+
The optimal conditions for the concentration of RBC Taq DNA Polymerase, MgCl2, primers and template DNA will depend on the system being utilized. It may be necessary to determine the optimal conditions for each individual component.<br/>
 +
<br/>
 +
1) Add the following components to a sterile microtube on ice:<br/>
 +
<table>
 +
<tr>
 +
<th>Components</th>
 +
<th>Volume</th>
 +
<th>Final Concentration</th>
 +
</tr>
 +
<tr>
 +
<td>10X Reaction buffer</td>
 +
<td>5&micro;l</td>
 +
<td>1X</td>
 +
</tr>
 +
<tr>
 +
<td>10mM dNTP mix</td>
 +
<td>0.5&micro;l</td>
 +
<td>0.1&micro;m</td>
 +
</tr>
 +
<tr>
 +
<td>Primer mix (10&micro;M each)</td>
 +
<td>1&micro;l</td>
 +
<td>0.2&micro;m</td>
 +
</tr>
 +
<tr>
 +
<td>Template DNA</td>
 +
<td>0.5&#8275;10&micro;l</td>
 +
<td>n/a</td>
 +
</tr>
 +
<tr>
 +
<td>RBC Taq DNA polymerase (5U/&micro;l)</td>
 +
<td>0.25&micro;l</td>
 +
<td>1.25units</td>
 +
</tr>
 +
<tr>
 +
<td>ddH2O</td>
 +
<td>to 50&micro;l</td>
 +
<td>n/a</td>
 +
</tr>
 +
</table>
 +
<br/>
 +
2) Suggested Reaction Parameters for RBC Taq DNA Polymerase<br/>
 +
<table>
 +
<tr>
 +
<th>Segment</th>
 +
<th>Number of cycles</th>
 +
<th>Temperature</th>
 +
<th>Duration</th>
 +
</tr>
 +
<tr>
 +
<td>1</td>
 +
<td>1</td>
 +
<td>94&deg;C</td>
 +
<td>1&#8275;3 minutes</td>
 +
</tr>
 +
<tr>
 +
<td>2</td>
 +
<td>25&#8275;35</td>
 +
<td>
 +
94&deg;C (<i>denature</i>)<br/>
 +
5 degree lower than Tm of Primer<br/>
 +
72&deg;C (<i>extend</i>)
 +
</td>
 +
<td>
 +
30 seconds&#8275;1 30<br/>
 +
seconds&#8275;1 minute<br/>
 +
1minute/Kbp
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>3</td>
 +
<td>1</td>
 +
<td>
 +
72&deg;C<br/>
 +
4&deg;C
 +
</td>
 +
<td>7 minutes</td>
 +
</tr>
 +
</table>
 +
<br/>
 +
3) Analyze the amplification products by agarose gel electrophoresis and visualize by ethidium bromide staining.<br/>
 +
<br/>
 +
<a href="http://webdownload.rbcbioscience.com/RBC%20Polymerases/DNA%20Polymerase/RBC%20Taq%20DNA%20Polymerase/RBC%20Taq%20DNA%20Polymerase%20Protocol%20V2.0.pdf" target="_blank">External link</a><br/>
 +
</html>|RBC-Taq-DNA-pol-PCR}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|RBC Taq DNA Polymerase Protocol V2.0|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Phusion PCR Protocol|<html>
-
The optimal conditions for the concentration of RBC Taq DNA Polymerase, MgCl2, primers and template DNA will depend on the system being utilized. It may be necessary to determine the optimal conditions for each individual component.<br/>
+
<table>
-
<br/>
+
<tr>
-
1) Add the following components to a sterile microtube on ice:<br/>
+
<th>
-
<table>
+
Component
-
<tr>
+
</th>
-
<th>Components</th>
+
<th>
-
<th>Volume</th>
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50 &micro;l Reaction
-
<th>Final Concentration</th>
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</th>
-
</tr>
+
</tr>
-
<tr>
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<tr>
-
<td>10X Reaction buffer</td>
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<td>
-
<td>5&micro;l</td>
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Nuclease-free water
-
<td>1X</td>
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</td>
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</tr>
+
<td>
-
<tr>
+
to 50 &micro;l
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<td>10mM dNTP mix</td>
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</td>
-
<td>0.5&micro;l</td>
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</tr>
-
<td>0.1&micro;m</td>
+
<tr>
-
</tr>
+
<td>
-
<tr>
+
5X Phusion HF or GC Buffer
-
<td>Primer mix (10&micro;M each)</td>
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</td>
-
<td>1&micro;l</td>
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<td>
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<td>0.2&micro;m</td>
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10 &micro;l
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</tr>
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</td>
-
<tr>
+
</tr>
-
<td>Template DNA</td>
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<tr>
-
<td>0.5&#8275;10&micro;l</td>
+
<td>
-
<td>n/a</td>
+
10 mM dNTPs
-
</tr>
+
</td>
-
<tr>
+
<td>
-
<td>RBC Taq DNA polymerase (5U/&micro;l)</td>
+
1 &micro;l
-
<td>0.25&micro;l</td>
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</td>
-
<td>1.25units</td>
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</tr>
-
</tr>
+
<tr>
-
<tr>
+
<td>
-
<td>ddH2O</td>
+
10 &micro;M Forward Primer
-
<td>to 50&micro;l</td>
+
</td>
-
<td>n/a</td>
+
<td>
-
</tr>
+
2.5 &micro;l
-
</table>
+
</td>
-
<br/>
+
</tr>
-
2) Suggested Reaction Parameters for RBC Taq DNA Polymerase<br/>
+
<tr>
-
<table>
+
<td>
-
<tr>
+
10 &micro;M Reverse Primer
-
<th>Segment</th>
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</td>
-
<th>Number of cycles</th>
+
<td>
-
<th>Temperature</th>
+
2.5 &micro;l
-
<th>Duration</th>
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</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<td>1</td>
+
<td>
-
<td>1</td>
+
Template DNA
-
<td>94&deg;C</td>
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</td>
-
<td>1&#8275;3 minutes</td>
+
<td>
-
</tr>
+
Variable
-
<tr>
+
</td>
-
<td>2</td>
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</tr>
-
<td>25&#8275;35</td>
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<tr>
-
<td>
+
<td>
-
94&deg;C (<i>denature</i>)<br/>
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DMSO (optional)
-
5 degree lower than Tm of Primer<br/>
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</td>
-
72&deg;C (<i>extend</i>)
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<td>
-
</td>
+
(1.5 &micro;l)
-
<td>
+
</td>
-
30 seconds&#8275;1 30<br/>
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</tr>
-
seconds&#8275;1 minute<br/>
+
<tr>
-
1minute/Kbp
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<td>
-
</td>
+
Phusion DNA Polymerase
-
</tr>
+
</td>
-
<tr>
+
<td>
-
<td>3</td>
+
0.5 &micro;l
-
<td>1</td>
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</td>
-
<td>
+
</tr>
-
72&deg;C<br/>
+
</table><br/>
-
4&deg;C
+
-
</td>
+
-
<td>7 minutes</td>
+
-
</tr>
+
-
</table>
+
-
<br/>
+
-
3) Analyze the amplification products by agarose gel electrophoresis and visualize by ethidium bromide staining.<br/>
+
-
<br/>
+
-
<a href="http://webdownload.rbcbioscience.com/RBC%20Polymerases/DNA%20Polymerase/RBC%20Taq%20DNA%20Polymerase/RBC%20Taq%20DNA%20Polymerase%20Protocol%20V2.0.pdf" target="_blank">External link</a><br/>
+
-
</html>|RBC-Taq-DNA-pol-PCR}}
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Phusion PCR Protocol|<html>
+
For the template DNA, use 1 &micro;l (50 ng/ &micro;l) of E.coli genomic DNA.<br/>
-
<table>
+
<br/>
-
<tr>
+
Set the PCR with the following parameters:<br/>
-
<th>
+
<br/>
-
Component
+
-
</th>
+
-
<th>
+
-
50 &micro;l Reaction
+
-
</th>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
Nuclease-free water
+
-
</td>
+
-
<td>
+
-
to 50 &micro;l
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
5X Phusion HF or GC Buffer
+
-
</td>
+
-
<td>
+
-
10 &micro;l
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
10 mM dNTPs
+
-
</td>
+
-
<td>
+
-
1 &micro;l
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
10 &micro;M Forward Primer
+
-
</td>
+
-
<td>
+
-
2.5 &micro;l
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
10 &micro;M Reverse Primer
+
-
</td>
+
-
<td>
+
-
2.5 &micro;l
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
Template DNA
+
-
</td>
+
-
<td>
+
-
Variable
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
DMSO (optional)
+
-
</td>
+
-
<td>
+
-
(1.5 &micro;l)
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
Phusion DNA Polymerase
+
-
</td>
+
-
<td>
+
-
0.5 &micro;l
+
-
</td>
+
-
</tr>
+
-
</table><br/>
+
-
For the template DNA, use 1 &micro;l  (50 ng/ &micro;l) of E.coli genomic DNA.<br/>
+
<table>
-
<br/>
+
<tr>
-
Set the PCR with the following parameters:<br/>
+
<th>Cycle step</th>
-
<br/>
+
<th>Cycles</th>
 +
<th>Temp [&deg;C]</th>
 +
<th>Time [s]</th>
 +
</tr>
 +
<tr>
 +
<td>Initial denaturation</td>
 +
<td>1</td>
 +
<td>98</td>
 +
<td>30</td>
 +
</tr>
 +
<tr>
 +
<td>Denaturation</td>
 +
<td>30</td>
 +
<td>98</td>
 +
<td>5-10</td>
 +
</tr>
 +
<tr>
 +
<td>Annealing</td>
 +
<td>&nbsp;</td>
 +
<td>72</td>
 +
<td>10-30</td>
 +
</tr>
 +
<tr>
 +
<td>Extention</td>
 +
<td>&nbsp;</td>
 +
<td>72</td>
 +
<td>10-30*kb</td>
 +
</tr>
 +
<tr>
 +
<td>Final extention</td>
 +
<td>1</td>
 +
<td>72</td>
 +
<td>5-10 [min]</td>
 +
</tr>
 +
<tr>
 +
<td>Hold</td>
 +
<td>1</td>
 +
<td>4</td>
 +
<td>&infin;</td>
 +
</tr>
 +
</table>
 +
</html>|Phusion-PCR}}
-
<table>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|OneTaq + Phu PCR|<html>
-
<tr>
+
1) Add the following components in a sterile microtube on ice:
-
<th>Cycle step</th>
+
<table>
-
<th>Cycles</th>
+
<tr>
-
<th>Temp [&deg;C]</th>
+
<th colspan="2">
-
<th>Time [s]</th>
+
Reaction Mix
-
</tr>
+
</th>
-
<tr>
+
</tr>
-
<td>Initial denaturation</td>
+
<tr>
-
<td>1</td>
+
<th>5x One Taq Buffer</th>
-
<td>98</td>
+
<td>10 &micro;l</td>
-
<td>30</td>
+
</tr>
-
</tr>
+
<tr>
-
<tr>
+
<th>Fwd Primer</th>
-
<td>Denaturation</td>
+
<td>1 &micro;l</td>
-
<td>30</td>
+
</tr>
-
<td>98</td>
+
<tr>
-
<td>5-10</td>
+
<th>Rev Primer</th>
-
</tr>
+
<td>1 &micro;l</td>
-
<tr>
+
</tr>
-
<td>Annealing</td>
+
<tr>
-
<td>&nbsp;</td>
+
<th>10 mM dNTP's</th>
-
<td>72</td>
+
<td>1 &micro;l</td>
-
<td>10-30</td>
+
</tr>
-
</tr>
+
<tr>
-
<tr>
+
<th>One Taq</th>
-
<td>Extention</td>
+
<td>0.25 &micro;l</td>
-
<td>&nbsp;</td>
+
</tr>
-
<td>72</td>
+
<tr>
-
<td>10-30*kb</td>
+
<th>Phusion</th>
-
</tr>
+
<td>0.3 &micro;l</td>
-
<tr>
+
</tr>
-
<td>Final extention</td>
+
<tr>
-
<td>1</td>
+
<th>Template DNA</th>
-
<td>72</td>
+
<td>50-100 ng</td>
-
<td>5-10 [min]</td>
+
</tr>
-
</tr>
+
<tr>
-
<tr>
+
<th>H20</th>
-
<td>Hold</td>
+
<td>up to 50 &micro;l</td>
-
<td>1</td>
+
</tr>
-
<td>4</td>
+
</table>
-
<td>&infin;</td>
+
-
</tr>
+
-
</table>
+
-
</html>|Phusion-PCR}}
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|OneTaq + Phu PCR|<html>
+
2) Suggested reaction parameters:
-
1) Add the following components in a sterile microtube on ice:
+
<table>
-
<table>
+
<tr>
-
<tr>
+
<th>Cycle Step</th>
-
<th colspan="2">
+
<th>Cycles</th>
-
Reaction Mix
+
<th>Temp [&deg;C]</th>
-
</th>
+
<th>Time [s]</th>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<th>5x One Taq Buffer</th>
+
<td>Inital denaturation</td>
-
<td>10 &micro;l</td>
+
<td>1</td>
-
</tr>
+
<td>94</td>
-
<tr>
+
<td>120</td>
-
<th>Fwd Primer</th>
+
</tr>
-
<td>1 &micro;l</td>
+
<tr>
-
</tr>
+
<td>Denaturation</td>
-
<tr>
+
<td>30</td>
-
<th>Rev Primer</th>
+
<td>94</td>
-
<td>1 &micro;l</td>
+
<td>30</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<th>10 mM dNTP's</th>
+
<td>Annealing</td>
-
<td>1 &micro;l</td>
+
<td></td>
-
</tr>
+
<td>60 *</td>
-
<tr>
+
<td>60</td>
-
<th>One Taq</th>
+
</tr>
-
<td>0.25 &micro;l</td>
+
<tr>
-
</tr>
+
<td>Extension</td>
-
<tr>
+
<td></td>
-
<th>Phusion</th>
+
<td>68</td>
-
<td>0.3 &micro;l</td>
+
<td>60 s/Kbase</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<th>Template DNA</th>
+
<td>Final Extension</td>
-
<td>50-100 ng</td>
+
<td>1</td>
-
</tr>
+
<td>68</td>
-
<tr>
+
<td>300</td>
-
<th>H20</th>
+
</tr>
-
<td>up to 50 &micro;l</td>
+
<tr>
-
</tr>
+
<td>Hold</td>
-
</table>
+
<td>1</td>
 +
<td>4</td>
 +
<td>&#8734;</td>
 +
</tr>
 +
</table>
 +
</html>|OneTaq-Phu-PCR}}
-
2) Suggested reaction parameters:
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Illustra GFX PCR DNA and Gel Band Purification Kit|<html>
-
<table>
+
<ol>
-
<tr>
+
<li>
-
<th>Cycle Step</th>
+
Sample Capture:
-
<th>Cycles</th>
+
<ul>
-
<th>Temp [&deg;C]</th>
+
<li>Add 250 &micro;l of <i>Capture buffer</i> type 3 to the sample.</li>
-
<th>Time [s]</th>
+
<li>Mix and control that the color is yellow or pale orange.</li>
-
</tr>
+
</ul>
-
<tr>
+
</li>
-
<td>Inital denaturation</td>
+
<li>
-
<td>1</td>
+
Sample Binding:
-
<td>94</td>
+
<ul>
-
<td>120</td>
+
<li>Transfer the mix in the assembled <i>GFX MicroSpin column</i> and Collection tube.</li>
-
</tr>
+
<li>Spin for 30s at 16000*g (&#8275;13000rpm) and discard the Collection tube.</li>
-
<tr>
+
<li>Replace <i>GFX MicroSpin column</i> in the same Collection tube.</li>
-
<td>Denaturation</td>
+
</ul>
-
<td>30</td>
+
</li>
-
<td>94</td>
+
<li>
-
<td>30</td>
+
Wash and Dry:
-
</tr>
+
<ul>
-
<tr>
+
<li>Add 500 &micro;l of <i>Wash buffer</i> type 1.</li>
-
<td>Annealing</td>
+
<li>Spin for 30s at 16000*g (&#8275;13000rpm) and discard the Collection tube.</li>
-
<td></td>
+
<li>Transfer the <i>GFX MicroSpin column</i> in a clean tube.</li>
-
<td>60 *</td>
+
</ul>
-
<td>60</td>
+
</li>
-
</tr>
+
<li>
-
<tr>
+
Eluition:
-
<td>Extension</td>
+
<ul>
-
<td></td>
+
<li>Add 50 &micro;l of distilled water.</li>
-
<td>68</td>
+
<li>Incubate for 1 minute at room temperature.</li>
-
<td>60 s/Kbase</td>
+
<li>Spin for 1 minute at 13000rpm.</li>
-
</tr>
+
<li>Retain flowthrough.</li>
-
<tr>
+
<li>Quantify the sample at <i>Nanodrop</i> and label it with its concentration.</li>
-
<td>Final Extension</td>
+
</ul>
-
<td>1</td>
+
</li>
-
<td>68</td>
+
</ol>
-
<td>300</td>
+
<br/>
-
</tr>
+
<a href="https://www.gelifesciences.com/gehcls_images/GELS/Related%20Content/Files/1314774443672/litdoc28951562AA_20110831111511.pdf" target="_blank">External protocol</a><br/>
-
<tr>
+
<a href="http://www.gelifesciences.com/webapp/wcs/stores/servlet/catalog/en/GELifeSciences/products/AlternativeProductStructure_17513/28903470" target="_blank">External site</a><br/>
-
<td>Hold</td>
+
</html>|Illustra-GFX-PCR}}
-
<td>1</td>
+
-
<td>4</td>
+
-
<td>&#8734;</td>
+
-
</tr>
+
-
</table>
+
-
</html>|OneTaq-Phu-PCR}}
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Illustra GFX PCR DNA and Gel Band Purification Kit|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Wizard&reg; SV Gel and PCR Clean-Up System Technical Bulletin|<html>
-
<ol>
+
<a href="http://ita.promega.com/~/media/Files/Resources/Protocols/Technical%20Bulletins/101/Wizard%20SV%20Gel%20and%20PCR%20Clean-Up%20System%20Protocol.pdf" target="_blank">Complete protocol</a> (136kb)<br/>
-
<li>
+
<a href="http://ita.promega.com/~/media/Files/Resources/ProtCards/Wizard%20SV%20Gel%20and%20PCR%20Clean-Up%20System%20Quick%20Protocol.pdf" target="_blank">Quik protocol</a> (75kb)
-
Sample Capture:
+
</html>|Promega-PCR-Gel}}
-
<ul>
+
-
<li>Add 250 &micro;l of <i>Capture buffer</i> type 3 to the sample.</li>
+
-
<li>Mix and control that the color is yellow or pale orange.</li>
+
-
</ul>
+
-
</li>
+
-
<li>
+
-
Sample Binding:
+
-
<ul>
+
-
<li>Transfer the mix in the assembled <i>GFX MicroSpin column</i> and Collection tube.</li>
+
-
<li>Spin for 30s at 16000*g (&#8275;13000rpm) and discard the Collection tube.</li>
+
-
<li>Replace <i>GFX MicroSpin column</i> in the same Collection tube.</li>
+
-
</ul>
+
-
</li>
+
-
<li>
+
-
Wash and Dry:
+
-
<ul>
+
-
<li>Add 500 &micro;l of <i>Wash buffer</i> type 1.</li>
+
-
<li>Spin for 30s at 16000*g (&#8275;13000rpm) and discard the Collection tube.</li>
+
-
<li>Transfer the <i>GFX MicroSpin column</i> in a clean tube.</li>
+
-
</ul>
+
-
</li>
+
-
<li>
+
-
Eluition:
+
-
<ul>
+
-
<li>Add 50 &micro;l of distilled water.</li>
+
-
<li>Incubate for 1 minute at room temperature.</li>
+
-
<li>Spin for 1 minute at 13000rpm.</li>
+
-
<li>Retain flowthrough.</li>
+
-
<li>Quantify the sample at <i>Nanodrop</i> and label it with its concentration.</li>
+
-
</ul>
+
-
</li>
+
-
</ol>
+
-
<br/>
+
-
<a href="https://www.gelifesciences.com/gehcls_images/GELS/Related%20Content/Files/1314774443672/litdoc28951562AA_20110831111511.pdf" target="_blank">External protocol</a><br/>
+
-
<a href="http://www.gelifesciences.com/webapp/wcs/stores/servlet/catalog/en/GELifeSciences/products/AlternativeProductStructure_17513/28903470" target="_blank">External site</a><br/>
+
-
</html>|Illustra-GFX-PCR}}
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Wizard&reg; SV Gel and PCR Clean-Up System Technical Bulletin|<html>
+
<h2>Cells</h2>
-
<a href="http://ita.promega.com/~/media/Files/Resources/Protocols/Technical%20Bulletins/101/Wizard%20SV%20Gel%20and%20PCR%20Clean-Up%20System%20Protocol.pdf" target="_blank">Complete protocol</a> (136kb)<br/>
+
-
<a href="http://ita.promega.com/~/media/Files/Resources/ProtCards/Wizard%20SV%20Gel%20and%20PCR%20Clean-Up%20System%20Quick%20Protocol.pdf" target="_blank">Quik protocol</a> (75kb)
+
-
</html>|Promega-PCR-Gel}}
+
-
<h2>Cells</h2>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Competent cells preparation|<html>
 +
<ul>
 +
<li>Transformation Buffer: sterile 10 mM Tris-HCl, pH 7.0, 50 mM CaCl2</li>
 +
<li>Grow a 50 mL culture in LB at 37 deg C from 1 colony.</li>
 +
<li>When OD ~ 0.5, collect the cells in a sterile Falcon tube and chill on ice for 10min.</li>
 +
<li>Centrifuge at 5000 rpm for 10 min at 4 deg C. Discard supernatant.</li>
 +
<li>Resuspend cells in 15 mL of transformation buffer.</li>
 +
<li>Chill on ice for 15 min. Spin at 5000 rpm for 10 min at 4 deg C. Discard supernatant.</li>
 +
<li>Resuspend cells in 4 mL of transformation buffer.</li>
 +
</ul>
 +
<br/>
 +
The cells are now ready to be transformed. They can be stored in this state at 4 deg C for under a week.<br/>
 +
Alternatively, the competent cells can be aliquoted (200&micro;L), adding glycerol to a final conc of 15% (v/v), and the cells stored at –80 deg C.<br/>
 +
Every time you make new competent cells you should check for possible contaminations. Plate an aliquot of the new cells in LB plates + antibiotic (i.e. ampicillin, chloramphenicol, kanamycin). Strains such as DH5a, NEB10b, Novablue, should not grow in the presence of antibiotics.<br/>
 +
</html>|Competent-cells-prep}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Competent cells preparation|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Competent cells transformation|<html>
-
<ul>
+
<b>Competent cells must always stay in ice</b>
-
<li>Transformation Buffer: sterile 10 mM Tris-HCl, pH 7.0, 50 mM CaCl2</li>
+
<ul>
-
<li>Grow a 50 mL culture in LB at 37 deg C from 1 colony.</li>
+
<li>Thaw home made CaCl2 competent cells on ice.</li>
-
<li>When OD ~ 0.5, collect the cells in a sterile Falcon tube and chill on ice for 10min.</li>
+
<li>Add 1&micro;L of DNA to 200&micro;L of competent cells (concentration of DNA stock should be between 50–150 ng/&micro;L).</li>
-
<li>Centrifuge at 5000 rpm for 10 min at 4 deg C. Discard supernatant.</li>
+
<li>Incubate on ice for 30 min.</li>
-
<li>Resuspend cells in 15 mL of transformation buffer.</li>
+
<li>Heat shock at 42&deg;C for exactly 2 min.</li>
-
<li>Chill on ice for 15 min. Spin at 5000 rpm for 10 min at 4 deg C. Discard supernatant.</li>
+
<li>Incubate on ice 1 min.</li>
-
<li>Resuspend cells in 4 mL of transformation buffer.</li>
+
<li>Add 500-700&micro;L of LB (or SOC) and shake at 37&deg;C for 1 h.</li>
-
</ul>
+
<li>Plate the cells (use plates with the appropriate antibiotic according to your plasmid).</li>
-
<br/>
+
</ul>
-
The cells are now ready to be transformed. They can be stored in this state at 4 deg C for under a week.<br/>
+
<br/>
-
Alternatively, the competent cells can be aliquoted (200&micro;L), adding glycerol to a final conc of 15% (v/v), and the cells stored at –80 deg C.<br/>
+
You can either plate a small amount (200&micro;L) of the cells or more.<br/>
-
Every time you make new competent cells you should check for possible contaminations. Plate an aliquot of the new cells in LB plates + antibiotic (i.e. ampicillin, chloramphenicol, kanamycin). Strains such as DH5a, NEB10b, Novablue, should not grow in the presence of antibiotics.<br/>
+
You should try a few conditions the first time and then choose the one that gives 30–300 separate colonies.<br/>
-
</html>|Competent-cells-prep}}
+
If few cells are expected: spin down the cells at 2500 rpm, discard supernatant and resuspend in 150–200&micro;L of LB and plate all the cells.<br/>
 +
<br/>
 +
Plates must be labeled as follow:<br/>
 +
strain – [resistance] – part – “(plasmid)” – YOUR_NAME – date<br/>
 +
<br/>
 +
For ligation you should increase the amount of DNA to be transformed (see cloning protocol).<br/>
 +
<ul><li>Incubate the plates O/N upside down at 37&deg;C.</li></ul>
 +
<b>!!!Don't plate before four o'clock!!!</b><br/>
 +
</html>|Competent-cells-transformation}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Competent cells transformation|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|B. subtilis transformation (from Groeningen iGEM2013 team)|<html>
-
<b>Competent cells must always stay in ice</b>
+
<span>Prepare the competence medium as follow:</span>
-
<ul>
+
<table class="tn-sp-table">
-
<li>Thaw home made CaCl2 competent cells on ice.</li>
+
<tr colspan="2">
-
<li>Add 1&micro;L of DNA to 200&micro;L of competent cells (concentration of DNA stock should be between 50–150 ng/&micro;L).</li>
+
<th>Competence medium (MC completed)</th>
-
<li>Incubate on ice for 30 min.</li>
+
</tr>
-
<li>Heat shock at 42&deg;C for exactly 2 min.</li>
+
<tr>
-
<li>Incubate on ice 1 min.</li>
+
<td>
-
<li>Add 500-700&micro;L of LB (or SOC) and shake at 37&deg;C for 1 h.</li>
+
H2O
-
<li>Plate the cells (use plates with the appropriate antibiotic according to your plasmid).</li>
+
</td>
-
</ul>
+
<TD>
-
<br/>
+
1.8 ml
-
You can either plate a small amount (200&micro;L) of the cells or more.<br/>
+
</TD>
-
You should try a few conditions the first time and then choose the one that gives 30–300 separate colonies.<br/>
+
</tr>
-
If few cells are expected: spin down the cells at 2500 rpm, discard supernatant and resuspend in 150–200&micro;L of LB and plate all the cells.<br/>
+
<tr>
-
<br/>
+
<td>
-
Plates must be labeled as follow:<br/>
+
10x MC
-
strain – [resistance] – part – “(plasmid)” – YOUR_NAME – date<br/>
+
</td>
-
<br/>
+
<TD>
-
For ligation you should increase the amount of DNA to be transformed (see cloning protocol).<br/>
+
200 ul
-
<ul><li>Incubate the plates O/N upside down at 37&deg;C.</li></ul>
+
</TD>
-
<b>!!!Don't plate before four o'clock!!!</b><br/>
+
</tr>
-
</html>|Competent-cells-transformation}}
+
<tr>
 +
<td>
 +
MgSO4 1M
 +
</td>
 +
<TD>
 +
6.7 ul
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
trp 1% (for trp - strains)
 +
</td>
 +
<TD>
 +
10 ul
 +
</TD>
 +
</tr>
 +
</table>
 +
<table class="tn-sp-table">
 +
<tr>
 +
<th colspan="2">
 +
MC 10x
 +
</th>
 +
</tr>
 +
<tr>
 +
<td colspan="2">
 +
for 100 ml
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>
 +
K2HPO4 3H2O
 +
</td>
 +
<TD>
 +
14.036 g
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
KH2PO4
 +
</td>
 +
<TD>
 +
5.239 g
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
Glucose
 +
</td>
 +
<TD>
 +
20 g
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
Tri-Na Citrate 300 mM
 +
</td>
 +
<TD>
 +
10 ml
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
Ferric NH4 Citrate
 +
</td>
 +
<TD>
 +
1 ml
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
Casein Hydrolysate
 +
</td>
 +
<TD>
 +
1 g
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td>
 +
K glutamate
 +
</td>
 +
<TD>
 +
2 g
 +
</TD>
 +
</tr>
 +
<tr>
 +
<td colspan="2">Mix everything in 40-50 ml H2O, then adjust to 100 ml, filter sterilize, freeze at -20 C</td>
 +
</tr>
 +
</table>
 +
<table class="tn-sp-table">
 +
<tr>
 +
<th>
 +
Tri-Na Citrate 300mM
 +
</th>
 +
<td>
 +
8.823 g
 +
</td>
 +
<td>
 +
in 100 ml H2O
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
Ferric NH4 citrate
 +
</th>
 +
<td>
 +
2.2 g
 +
</td>
 +
<td>
 +
in 100 ml H2O
 +
</td>
 +
</tr>
 +
<tr>
 +
<td colspan="3">
 +
--> wrap in aluminium foil!!
 +
</td>
 +
</tr>
 +
</table>
 +
<br/>
 +
<ol>
 +
<li>
 +
Pick up a nice big colony and drop it in 2 ml of completed MC (1x) (see below);
 +
</li>
 +
<li>
 +
Grow at 37 &deg;C for 5 hours (or more if culture is not really turbid);
 +
</li>
 +
<li>
 +
Mix 400 ul of culture with DNA (usually 1 ug) in fresh tube (i.e. 15 ml tubes losely closed);
 +
</li>
 +
<li>
 +
Grow for additional 2 h at 37 &deg;C;
 +
</li>
 +
<li>
 +
Plate all on selective antibiotic plates, and incubate at 37 &deg;C O/N
 +
</li>
 +
</ol>
 +
</html>|subtilis-transformation}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|B. subtilis transformation (from Groeningen iGEM2013 team)|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Competent cells transformation efficiency kit (registry)|<html>
-
<span>Prepare the competence medium as follow:</span>
+
<a href="http://parts.igem.org/Help:Transformation_Efficiency_Kit" target="_blank">External link (registry)</a>
-
<table class="tn-sp-table">
+
</html>|Competent-cells-transformation-efficiency}}
-
<tr colspan="2">
+
 
-
<th>Competence medium (MC completed)</th>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Gram Staining Protocol|<html>
-
</tr>
+
<ol>
 +
<li>
 +
Transfer 100 ul of sterile distilled water in an eppendorf;
 +
</li>
 +
<li>
 +
Pick up a colony using a tip and resuspend it in the sterile water;
 +
</li>
 +
<li>
 +
Verify that the glass slide is cleaned and degreased or clean it with 70% alcohol;
 +
</li>
 +
<li>
 +
Transfer 20 ul of bacterial suspension on the slide;
 +
</li>
 +
<li>
 +
Swipe gently bacterial suspension with the aid of a sterile loop to occupy 1-2 cm at the center of the slide;
 +
</li>
 +
<li>
 +
Let dry the slide by evaporation;
 +
</li>
 +
<li>
 +
Cover the central part of the slide with methanol, remove the excess and let it evaporate;
 +
</li>
 +
<li>
 +
Sock the slide in the crystal violet solution for 1 min, wash then with sterile water;
 +
</li>
 +
<li>
 +
Sock the slide in the lugol solution for 1 min, wash then with sterile water;
 +
</li>
 +
<li>
 +
Pour Gram bleach solution on the product for 20-30 s, wash then with sterile water;
 +
</li>
 +
<li>
 +
Sock the slide in the safranin solution for 1 min, wash then with sterile water;
 +
</li>
 +
<li>
 +
Finally let dry the slide and observe it with the microscope.
 +
</li>
 +
</ol>
 +
</html>|gram-staining}}
 +
 
 +
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|MNGE medium|<html>
 +
 
 +
<table>
<tr>
<tr>
-
<td>
+
<th colspan="2">MNGE medium 40 ml</th>
-
H2O
+
-
</td>
+
-
<TD>
+
-
1.8 ml
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<th>Compound</th>
-
10x MC
+
<th>Amount</th>
-
</td>
+
-
<TD>
+
-
200 ul
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>10xMN-Medium</td>
-
MgSO4 1M
+
<td>3,68ml</td>
-
</td>
+
-
<TD>
+
-
6.7 ul
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>Sterile water</td>
-
trp 1% (for trp - strains)
+
<td>33,12ml</td>
-
</td>
+
-
<TD>
+
-
10 ul
+
-
</TD>
+
</tr>
</tr>
-
</table>
 
-
<table class="tn-sp-table">
 
<tr>
<tr>
-
<th colspan="2">
+
<td>Glucose (20%)</td>
-
MC 10x
+
<td>4ml</td>
-
</th>
+
</tr>
</tr>
<tr>
<tr>
-
<td colspan="2">
+
<td>K-Glutamat (40%)</td>
-
for 100 ml
+
<td>200&micro;l</td>
-
</td>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>Fe[III]-ammonium-citrate (2,2 mg/ml)</td>
-
K2HPO4 3H2O
+
<td>200&micro;l</td>
-
</td>
+
-
<TD>
+
-
14.036 g
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>Tryptophan (5 mg/ml)</td>
-
KH2PO4
+
<td>400&micro;l</td>
-
</td>
+
-
<TD>
+
-
5.239 g
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>MgSO4 (1M)</td>
-
Glucose
+
<td>120&micro;l</td>
-
</td>
+
-
<TD>
+
-
20 g
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>threonine (5 mg/ml)</td>
-
Tri-Na Citrate 300 mM
+
<td>400&micro;l</td>
-
</td>
+
-
<TD>
+
-
10 ml
+
-
</TD>
+
</tr>
</tr>
 +
</table>
 +
 +
<table>
<tr>
<tr>
-
<td>
+
<th colspan="2">MN medium 10X 50 ml</th>
-
Ferric NH4 Citrate
+
-
</td>
+
-
<TD>
+
-
1 ml
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<th>Compound</th>
-
Casein Hydrolysate
+
<th>Amount</th>
-
</td>
+
-
<TD>
+
-
1 g
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td>
+
<td>K2HPO4 (x3 H2O)</td>
-
K glutamate
+
<td>6,8 g</td>
-
</td>
+
-
<TD>
+
-
2 g
+
-
</TD>
+
</tr>
</tr>
<tr>
<tr>
-
<td colspan="2">Mix everything in 40-50 ml H2O, then adjust to 100 ml, filter sterilize, freeze at -20 C</td>
+
<td>KH2PO4</td>
 +
<td>3 g</td>
</tr>
</tr>
-
</table>
 
-
<table class="tn-sp-table">
 
<tr>
<tr>
-
<th>
+
<td> Na-citrate (x 2 H2O)</td>
-
Tri-Na Citrate 300mM
+
<td>0.5 g</td>
-
</th>
+
-
<td>
+
-
8.823 g
+
-
</td>
+
-
<td>
+
-
in 100 ml H2O
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
Ferric NH4 citrate
+
-
</th>
+
-
<td>
+
-
2.2 g
+
-
</td>
+
-
<td>
+
-
in 100 ml H2O
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td colspan="3">
+
-
--> wrap in aluminium foil!!
+
-
</td>
+
</tr>
</tr>
</table>
</table>
-
<br/>
 
-
<ol>
 
-
<li>
 
-
Pick up a nice big colony and drop it in 2 ml of completed MC (1x) (see below);
 
-
</li>
 
-
<li>
 
-
Grow at 37 &deg;C for 5 hours (or more if culture is not really turbid);
 
-
</li>
 
-
<li>
 
-
Mix 400 ul of culture with DNA (usually 1 ug) in fresh tube (i.e. 15 ml tubes losely closed);
 
-
</li>
 
-
<li>
 
-
Grow for additional 2 h at 37 &deg;C;
 
-
</li>
 
-
<li>
 
-
Plate all on selective antibiotic plates, and incubate at 37 &deg;C O/N
 
-
</li>
 
-
</ol>
 
-
</html>|subtilis-transformation}}
 
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Competent cells transformation efficiency kit (registry)|<html>
+
</html>|mnge-medium}}
-
<a href="http://parts.igem.org/Help:Transformation_Efficiency_Kit" target="_blank">External link (registry)</a>
+
 
-
</html>|Competent-cells-transformation-efficiency}}
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Difco Sporulation Medium (from LMU - Munich iGEM team)|<html>
 +
<table>
 +
    <tr>
 +
        <td>Nutrienti Broth</td>
 +
        <td>8 g</td>
 +
    </tr>
 +
    <tr>
 +
        <td>KCl</td>
 +
        <td>1 g</td>
 +
    </tr>
 +
    <tr>
 +
        <td>MgSO4 1 M</td>
 +
        <td>1 ml</td>
 +
    </tr>
 +
    <tr>
 +
        <td>MnCl2 10 mM</td>
 +
        <td>1 ml</td>
 +
    </tr>
 +
    <tr>
 +
        <td>H2O  (bidest)</td>
 +
        <td>ad to 1.000  ml</td>
 +
    </tr>
 +
    <tr>
 +
        <td colspan ="2"> after autoclave add</td>
 +
    </tr>
 +
    <tr>
 +
        <td>CaCl2 1 M</td>
 +
        <td>0,5 ml</td>
 +
    </tr>
 +
    <tr>
 +
        <td>FeSO4 1 mM</td>
 +
        <td>1 ml</td>
 +
    </tr>
 +
</table>
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Gram Staining Protocol|<html>
+
-
<ol>
+
-
<li>
+
-
Transfer 100 ul of sterile distilled water in an eppendorf;
+
-
</li>
+
-
<li>
+
-
Pick up a colony using a tip and resuspend it in the sterile water;
+
-
</li>
+
-
<li>
+
-
Verify that the glass slide is cleaned and degreased or clean it with 70% alcohol;
+
-
</li>
+
-
<li>
+
-
Transfer 20 ul of bacterial suspension on the slide;
+
-
</li>
+
-
<li>
+
-
Swipe gently bacterial suspension with the aid of a sterile loop to occupy 1-2 cm at the center of the slide;
+
-
</li>
+
-
<li>
+
-
Let dry the slide by evaporation;
+
-
</li>
+
-
<li>
+
-
Cover the central part of the slide with methanol, remove the excess and let it evaporate;
+
-
</li>
+
-
<li>
+
-
Sock the slide in the crystal violet solution for 1 min, wash then with sterile water;
+
-
</li>
+
-
<li>
+
-
Sock the slide in the lugol solution for 1 min, wash then with sterile water;
+
-
</li>
+
-
<li>
+
-
Pour Gram bleach solution on the product for 20-30 s, wash then with sterile water;
+
-
</li>
+
-
<li>
+
-
Sock the slide in the safranin solution for 1 min, wash then with sterile water;
+
-
</li>
+
-
<li>
+
-
Finally let dry the slide and observe it with the microscope.
+
-
</li>
+
-
</ol>
+
-
</html>|gram-staining}}
+
-
<h2>Miscellaneous</h2>
+
</html>|Difco-Sporulation-Medium}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Parts extraction and transformation (NEB10&beta;).|<html>
+
<h2>Miscellaneous</h2>
-
<ol>
+
-
<li>Label the empty eppendorfs that will contain the parts, including antibiotic resistance, part denomination and position (and on which kit).</li>
+
-
<li>Spot the correct well and label it with a pen.</li>
+
-
<li>Push a hole with the pin of a micropipette and resuspend the content with 10ul water.</li>
+
-
<li>When the color is dark red, wait 1 minute.</li>
+
-
<li>Move the re-suspended part into the correct empty eppendorf.</li>
+
-
</ol>
+
-
</html>|parts-registry-extraction}}
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Wizard&reg; Plus SV Minipreps DNA Purification System Technical Bulletin|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Parts extraction and transformation (NEB10&beta;).|<html>
-
<a href="http://ita.promega.com/~/media/Files/Resources/Protocols/Technical%20Bulletins/0/Wizard%20Plus%20SV%20Minipreps%20DNA%20Purification%20System%20Protocol.pdf" target="_blank">Complete protocol</a> (180kb)<br/>
+
<ol>
-
<a href="http://ita.promega.com/~/media/Files/Resources/ProtCards/Wizard%20Plus%20SV%20Minipreps%20DNA%20Purification%20System%20Quick%20Protocol.pdf" target="_blank">Quik protocol</a> (72kb)
+
<li>Label the empty eppendorfs that will contain the parts, including antibiotic resistance, part denomination and position (and on which kit).</li>
-
</html>|miniprep}}
+
<li>Spot the correct well and label it with a pen.</li>
 +
<li>Push a hole with the pin of a micropipette and resuspend the content with 10ul water.</li>
 +
<li>When the color is dark red, wait 1 minute.</li>
 +
<li>Move the re-suspended part into the correct empty eppendorf.</li>
 +
</ol>
 +
</html>|parts-registry-extraction}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Biobrick cloning|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Wizard&reg; Plus SV Minipreps DNA Purification System Technical Bulletin|<html>
-
<!--biobrick cloning protocol -->
+
<a href="http://ita.promega.com/~/media/Files/Resources/Protocols/Technical%20Bulletins/0/Wizard%20Plus%20SV%20Minipreps%20DNA%20Purification%20System%20Protocol.pdf" target="_blank">Complete protocol</a> (180kb)<br/>
-
<p>
+
<a href="http://ita.promega.com/~/media/Files/Resources/ProtCards/Wizard%20Plus%20SV%20Minipreps%20DNA%20Purification%20System%20Quick%20Protocol.pdf" target="_blank">Quik protocol</a> (72kb)
-
Prepare the digestion mix as follow:  
+
</html>|miniprep}}
-
</p>
+
 
-
<table class="tn-sp-table">
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Biobrick cloning|<html>
-
<tr>
+
<!--biobrick cloning protocol -->
-
<td>
+
<p>
-
DNA
+
Prepare the digestion mix as follow:
-
</td>
+
</p>
-
<td>
+
<table class="tn-sp-table">
-
500 ng
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
10X NEB Buffer
+
-
</td>
+
-
<td>
+
-
2.5 ul
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
10X BSA
+
-
</td>
+
-
<td>
+
-
2.5 ul
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
E1
+
-
</td>
+
-
<td>
+
-
1 ul
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
E2
+
-
</td>
+
-
<td>
+
-
1 ul
+
-
</td>
+
-
</tr>
+
<tr>
<tr>
-
<td>
+
<td>
-
H2O
+
DNA
-
</td>
+
</td>
-
<td>
+
<td>
-
Up to 25 ul  
+
500 ng
-
</td>
+
</td>
-
</tr>
+
</tr>
-
</table>
+
<tr>
 +
<td>
 +
10X NEB Buffer
 +
</td>
 +
<td>
 +
2.5 ul
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>
 +
10X BSA
 +
</td>
 +
<td>
 +
2.5 ul
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>
 +
E1
 +
</td>
 +
<td>
 +
1 ul
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>
 +
E2
 +
</td>
 +
<td>
 +
1 ul
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>
 +
H2O
 +
</td>
 +
<td>
 +
Up to 25 ul  
 +
</td>
 +
</tr>
 +
</table>
-
<p>
+
<p>
-
Incubate the reaction mix at 37 &deg;C for 30 min. Disactivate then the enzymes incubating the mix at 80 &deg;C for 20 min.
+
Incubate the reaction mix at 37 &deg;C for 30 min. Disactivate then the enzymes incubating the mix at 80 &deg;C for 20 min.
-
The next step will be the ligation of the digestion products. The raction mix is prepared as follow:
+
The next step will be the ligation of the digestion products. The raction mix is prepared as follow:
-
</p>
+
</p>
-
<table class="tn-sp-table">
+
<table class="tn-sp-table">
-
<tr>
+
<tr>
-
<td>
+
<td>
-
Insert
+
Insert
-
</td>
+
</td>
-
<td>
+
<td>
-
3 fold excess
+
3 fold excess
-
</td>
+
</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<td>
+
<td>
-
Vector
+
Vector
-
</td>
+
</td>
-
<td>
+
<td>
-
40 ng
+
40 ng
-
</td>
+
</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<td>
+
<td>
-
10X T4 Ligase Buffer
+
10X T4 Ligase Buffer
-
</td>
+
</td>
-
<td>
+
<td>
-
2 ul
+
2 ul
-
</td>
+
</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<td>
+
<td>
-
T4 Ligase
+
T4 Ligase
-
</td>
+
</td>
-
<td>
+
<td>
-
1 ul
+
1 ul
-
</td>
+
</td>
-
</tr>
+
</tr>
-
<tr>
+
<tr>
-
<td>
+
<td>
-
H2O
+
H2O
-
</td>
+
</td>
-
<TD>
+
<TD>
-
Up to 20 ul
+
Up to 20 ul
-
</TD>
+
</TD>
-
</tr>
+
</tr>
-
</table>
+
</table>
-
<p>
+
<p>
-
Gently mix the reaction and incubate for 30 min at room temperature. Disactivate the enzymes at 80 &deg;C for 20 min. Transorm 10 ul of the reaction in competent cells.
+
Gently mix the reaction and incubate for 30 min at room temperature. Disactivate the enzymes at 80 &deg;C for 20 min. Transorm 10 ul of the reaction in competent cells.
-
</p>
+
</p>
-
</html>|biobrick-cloning}}
+
</html>|biobrick-cloning}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Ligation|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Ligation|<html>
-
Prepare the reaction mix, you can use the automatic calculator.<br/>
+
Prepare the reaction mix, you can use the automatic calculator.<br/>
-
</html>{{:Team:UNITN-Trento/Templates/Styles/Spoiler|Automatic Calculator|<html>
+
</html>{{:Team:UNITN-Trento/Templates/Styles/Spoiler|Automatic Calculator|<html>
-
<script type="text/javascript">
+
<script type="text/javascript">
-
/**
+
/**
-
*
+
*
-
*/
+
*/
-
function ligateCalc() {
+
function ligateCalc() {
-
//Calculate needed plasmid
+
//Calculate needed plasmid
-
insert_need = parseFloat($("input[name=plasmid_need]").val()*$("input[name=insert_length]").val()/$("input[name=plasmid_length]").val()).toFixed(2);
+
insert_need = parseFloat($("input[name=plasmid_need]").val()*$("input[name=insert_length]").val()/$("input[name=plasmid_length]").val()).toFixed(2);
-
$("td[data-pseudoid=insert_need]").text(insert_need);
+
$("td[data-pseudoid=insert_need]").text(insert_need);
-
//Calculate buffer
+
//Calculate buffer
-
buffer = parseFloat($("input[name=total_volume]").val()/$("input[name=buffer_conc]").val()).toFixed(2);
+
buffer = parseFloat($("input[name=total_volume]").val()/$("input[name=buffer_conc]").val()).toFixed(2);
-
$("td[data-pseudoid=buffer]").text(buffer);
+
$("td[data-pseudoid=buffer]").text(buffer);
-
//Calculate plasmid
+
//Calculate plasmid
-
plasmid = parseFloat($("input[name=plasmid_need]").val()/$("input[name=plasmid_conc]").val()).toFixed(2);
+
plasmid = parseFloat($("input[name=plasmid_need]").val()/$("input[name=plasmid_conc]").val()).toFixed(2);
-
$("td[data-pseudoid=plasmid]").text(plasmid);
+
$("td[data-pseudoid=plasmid]").text(plasmid);
-
//Calculate insert
+
//Calculate insert
-
insert = parseFloat($("td[data-pseudoid=insert_need]").text()/$("input[name=insert_conc]").val()).toFixed(2);
+
insert = parseFloat($("td[data-pseudoid=insert_need]").text()/$("input[name=insert_conc]").val()).toFixed(2);
-
$("td[data-pseudoid=insert_one]").text(insert);
+
$("td[data-pseudoid=insert_one]").text(insert);
-
$("td[data-pseudoid=insert_two]").text(insert*2);
+
$("td[data-pseudoid=insert_two]").text(insert*2);
-
$("td[data-pseudoid=insert_three]").text(insert*3);
+
$("td[data-pseudoid=insert_three]").text(insert*3);
-
$("td[data-pseudoid=insert_four]").text(insert*4);
+
$("td[data-pseudoid=insert_four]").text(insert*4);
-
//Calculate water
+
//Calculate water
-
total_volume = parseFloat($("input[name=total_volume]").val()).toFixed(2);
+
total_volume = parseFloat($("input[name=total_volume]").val()).toFixed(2);
-
$("td[data-pseudoid=water_ctrl]").text(parseFloat(total_volume-buffer-plasmid-1).toFixed(2));
+
$("td[data-pseudoid=water_ctrl]").text(parseFloat(total_volume-buffer-plasmid-1).toFixed(2));
-
$("td[data-pseudoid=water_one]").text(parseFloat(total_volume-buffer-plasmid-1-insert).toFixed(2));
+
$("td[data-pseudoid=water_one]").text(parseFloat(total_volume-buffer-plasmid-1-insert).toFixed(2));
-
$("td[data-pseudoid=water_two]").text(parseFloat(total_volume-buffer-plasmid-1-(insert*2)).toFixed(2));
+
$("td[data-pseudoid=water_two]").text(parseFloat(total_volume-buffer-plasmid-1-(insert*2)).toFixed(2));
-
$("td[data-pseudoid=water_three]").text(parseFloat(total_volume-buffer-plasmid-1-(insert*3)).toFixed(2));
+
$("td[data-pseudoid=water_three]").text(parseFloat(total_volume-buffer-plasmid-1-(insert*3)).toFixed(2));
-
$("td[data-pseudoid=water_four]").text(parseFloat(total_volume-buffer-plasmid-1-(insert*4)).toFixed(2));
+
$("td[data-pseudoid=water_four]").text(parseFloat(total_volume-buffer-plasmid-1-(insert*4)).toFixed(2));
-
}
+
}
-
$(document).ready(function() {
+
$(document).ready(function() {
-
$("#tn-ligation-calc input:text").each(function() {
+
$("#tn-ligation-calc input:text").each(function() {
-
$(this).change(function(e) {
+
$(this).change(function(e) {
-
e.preventDefault();
+
e.preventDefault();
-
ligateCalc();
+
ligateCalc();
 +
});
});
});
 +
ligateCalc();
});
});
-
ligateCalc();
+
</script>
-
});
+
<form id="tn-ligation-calc"><table>
-
</script>
+
<tr>
-
<form id="tn-ligation-calc"><table>
+
<th>Plasmid concentration (ng/&micro;l)</th>
 +
<td><input type="text" name="plasmid_conc" value="1" /></td>
 +
</tr>
 +
<tr>
 +
<th>Plasmid length (bp)</th>
 +
<td><input type="text" name="plasmid_length" value="1" /></td>
 +
</tr>
 +
<tr>
 +
<th>Insert concentration (ng/&micro;l)</th>
 +
<td><input type="text" name="insert_conc" value="1" /></td>
 +
</tr>
 +
<tr>
 +
<th>Insert length (bp)</th>
 +
<td><input type="text" name="insert_length" value="1" /></td>
 +
</tr>
 +
<tr>
 +
<th>Amount of plasmid you want to use (ng)</th>
 +
<td><input type="text" name="plasmid_need" value="200" /></td>
 +
</tr>
 +
<tr>
 +
<th>Volume of reaction (&micro;l)</th>
 +
<td><input type="text" name="total_volume" value="20" /></td>
 +
</tr>
 +
<tr>
 +
<th>Buffer concentration (X)</th>
 +
<td><input type="text" name="buffer_conc" value="10" /></td>
 +
</tr>
 +
<tr>
 +
<th>Amount of insert needed for 1:1 (ng)</th>
 +
<td data-pseudoid="insert_need">-</td>
 +
</tr>
 +
</table>
 +
<br/>
 +
<center><b>Results</b></center>
 +
<table class="results">
 +
<tr>
 +
<td style="border: none;">&nbsp;</td>
 +
<th>ctrl</th>
 +
<th>1:1</th>
 +
<th>1:2</th>
 +
<th>1:3</th>
 +
<th>1:4</th>
 +
</tr>
 +
<tr>
 +
<th>Buffer (&micro;l to have 1X)</th>
 +
<td data-pseudoid="buffer" colspan="5"></td>
 +
</tr>
 +
<tr>
 +
<th>Plasmid (&micro;l)</th>
 +
<td data-pseudoid="plasmid" colspan="5"></td>
 +
</tr>
 +
<tr>
 +
<th>Insert (&micro;l)</th>
 +
<td>0</td>
 +
<td data-pseudoid="insert_one"></td>
 +
<td data-pseudoid="insert_two"></td>
 +
<td data-pseudoid="insert_three"></td>
 +
<td data-pseudoid="insert_four"></td>
 +
</tr>
 +
<tr>
 +
<th>Ligase (&micro;l)</th>
 +
<td colspan="5">1</td>
 +
</tr>
 +
<tr>
 +
<th>Water (&micro;l)</th>
 +
<td data-pseudoid="water_ctrl"></td>
 +
<td data-pseudoid="water_one"></td>
 +
<td data-pseudoid="water_two"></td>
 +
<td data-pseudoid="water_three"></td>
 +
<td data-pseudoid="water_four"></td>
 +
</tr>
 +
</table></form>
 +
</html>}}<html>
 +
Prepare your reaction and incubate at RT for 2 hours. Transform half of the reaction into 200μL of “homemade” competent cells (DH5&alpha;, NEB10&beta;, Novablue or other appropriate strains) following a standard transformation protocol. Plate all the cells.
 +
</html>|Ligation}}
 +
 
 +
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Digestion|<html>
 +
Assemble the digestion mix as follow (check the correct buffer with the <a href="http://66.155.211.155/nebecomm/DoubleDigestCalculatorIntl.asp">Double Digest finder</a>).
 +
 
 +
<table>
<tr>
<tr>
-
<th>Plasmid concentration (ng/&micro;l)</th>
+
<td style="border: none;" rowspan="2"></td>
-
<td><input type="text" name="plasmid_conc" value="1" /></td>
+
<th colspan="2">Classic Cloning</th>
 +
<th rowspan="2">Screening</th>
</tr>
</tr>
<tr>
<tr>
-
<th>Plasmid length (bp)</th>
+
<th>PCR products</th>
-
<td><input type="text" name="plasmid_length" value="1" /></td>
+
<th>Plasmids</th>
</tr>
</tr>
<tr>
<tr>
-
<th>Insert concentration (ng/&micro;l)</th>
+
<th>Template</th>
-
<td><input type="text" name="insert_conc" value="1" /></td>
+
<td>&#126;3-4&micro;g</td>
 +
<td>&#126;2-3&micro;g</td>
 +
<td>&#126;1.0&micro;g</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Insert length (bp)</th>
+
<th>Enzyme 1</th>
-
<td><input type="text" name="insert_length" value="1" /></td>
+
<td rowspan="2">2.5&micro;l</td>
 +
<td rowspan="2">1.5&micro;l</td>
 +
<td rowspan="2">1.0&micro;l</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Amount of plasmid you want to use (ng)</th>
+
<th>Enzyme 2</th>
-
<td><input type="text" name="plasmid_need" value="200" /></td>
+
</tr>
</tr>
<tr>
<tr>
-
<th>Volume of reaction (&micro;l)</th>
+
<th>Buffer (stock 10X)</th>
-
<td><input type="text" name="total_volume" value="20" /></td>
+
<td>10&micro;l</td>
 +
<td>5&micro;l</td>
 +
<td>2&micro;l</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Buffer concentration (X)</th>
+
<th>BSA (stock 10X)</th>
-
<td><input type="text" name="buffer_conc" value="10" /></td>
+
<td>10&micro;l</td>
 +
<td>5&micro;l</td>
 +
<td>2&micro;l</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Amount of insert needed for 1:1 (ng)</th>
+
<th>Water</th>
-
<td data-pseudoid="insert_need">-</td>
+
<td>Up to 100&micro;l</td>
 +
<td>Up to 50&micro;l</td>
 +
<td>Up to 20&micro;l</td>
</tr>
</tr>
</table>
</table>
-
<br/>
+
 
-
<center><b>Results</b></center>
+
<h4>Classic Cloning - for PCR products</h4>
-
<table class="results">
+
Incubate at 37&deg;C overnight. The day after add 1&micro;l of DpnI and incubate at 37&deg;C for 2 hours. <i>Please note that PCR product must be purified before digestion.</i>
 +
<h4>Classic Cloning - for plasmids</h4>
 +
Incubate at 37&deg;C overnight. The day after add 1&micro;L of phosphatase (CIP or SAP) to the vector and incubate for 2 hours at 37&deg;C.
 +
<h4>Biobricks Cloning</h4>
 +
        Incubate at 37&deg;C for 30 minutes. Then disactivate the enzymes at 80&deg;C for 20 minutes.
 +
        <h4>Screening</h4>
 +
Incubate for 1.5h at 37&deg;C. Run all the digested product on an agarose gel to screen colonies.
 +
<br/><br/><hr/><br/>
 +
<a href="http://66.155.211.155/nebecomm/DoubleDigestCalculatorIntl.asp">Double Digest finder</a>
 +
</html>|Digestion}}
 +
 
 +
<h2>Details</h2>
 +
 
 +
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|SAMsynthetase extraction from <i>E. coli</i> (strain MG1655) genome|<html>
 +
<table>
<tr>
<tr>
-
<td style="border: none;">&nbsp;</td>
+
<th colspan="4">PRIMERS SEQUENCES</th>
-
<th>ctrl</th>
+
-
<th>1:1</th>
+
-
<th>1:2</th>
+
-
<th>1:3</th>
+
-
<th>1:4</th>
+
</tr>
</tr>
<tr>
<tr>
-
<th>Buffer (&micro;l to have 1X)</th>
+
<td>Primer Forward</td>
-
<td data-pseudoid="buffer" colspan="5"></td>
+
<td>GCCGCTTCTAGAGA AGGAGG AACTACT <b>ATG</b>GCAAAACACCTTTTT</td>
 +
<td>prefix(only Xba1) + RBS + spacer + ATG...</td>
 +
<td>Tm = 66&deg;C</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Plasmid (&micro;l)</th>
+
<td>Primer Reverse</td>
-
<td data-pseudoid="plasmid" colspan="5"></td>
+
<td>CTGCCGGTCTGAAG TAATAA TACTAGTAGCGGCCGCTGCAG</td>
 +
<td>sequence + stop codon + suffix</td>
 +
<td>Tm = 67.5&deg;C</td>
</tr>
</tr>
 +
</table>
 +
 +
SAMsynthethase gene length = 1155 bp<br>
 +
 +
<table class="tn-sp-table">
<tr>
<tr>
-
<th>Insert (&micro;l)</th>
+
<th colspan="2">PCR mix</th>
-
<td>0</td>
+
</tr>
-
<td data-pseudoid="insert_one"></td>
+
<tr><!--riga-->
-
<td data-pseudoid="insert_two"></td>
+
<th><!--colonna-->Solutes</th>
-
<td data-pseudoid="insert_three"></td>
+
<th>Quantities or Concentration</th>
-
<td data-pseudoid="insert_four"></td>
+
</tr>
 +
<tr>
 +
<td>Template(genome)</td>
 +
<td>1ng/ &micro;l</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Ligase (&micro;l)</th>
+
<td>dNTPs</td>
-
<td colspan="5">1</td>
+
<td>0.5&micro;l</td>
</tr>
</tr>
<tr>
<tr>
-
<th>Water (&micro;l)</th>
+
<td>Primer Forward</td>
-
<td data-pseudoid="water_ctrl"></td>
+
<td>1 &micro;l</td>
-
<td data-pseudoid="water_one"></td>
+
-
<td data-pseudoid="water_two"></td>
+
-
<td data-pseudoid="water_three"></td>
+
-
<td data-pseudoid="water_four"></td>
+
</tr>
</tr>
-
</table></form>
+
<tr>
-
</html>}}<html>
+
<td>Primer Reverse</td>
-
Prepare your reaction and incubate at RT for 2 hours. Transform half of the reaction into 200μL of “homemade” competent cells (DH5&alpha;, NEB10&beta;, Novablue or other appropriate strains) following a standard transformation protocol. Plate all the cells.
+
<td>1 &micro;l</td>
-
</html>|Ligation}}
+
</tr>
 +
<tr>
 +
<td>Buffer RBC</td>
 +
<td>1X</td>
 +
</tr>
 +
<tr>
 +
<td>Phusion polimerase</td>
 +
<td>0.3 &micro;l</td>
 +
</tr>
 +
<tr>
 +
<td>RBC Taq polimerase</td>
 +
<td>0.25 &micro;l</td>
 +
</tr>
 +
<tr>
 +
<td>Water</td>
 +
<td>up to 50 &micro;l</td>
 +
</tr>
 +
</table>
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Digestion|<html>
+
We have chosen to use RBC for its amplification power and Phusion for its proofreading activity<br>
-
Assemble the digestion mix as follow (check the correct buffer with the <a href="http://66.155.211.155/nebecomm/DoubleDigestCalculatorIntl.asp">Double Digest finder</a>).
+
-
<table>
+
The program set on the PCR is the following:
-
<tr>
+
-
<td style="border: none;" rowspan="2"></td>
+
-
<th colspan="2">Classic Cloning</th>
+
-
<th rowspan="2">Screening</th>
+
-
</tr>
+
-
<tr>
+
-
<th>PCR products</th>
+
-
<th>Plasmids</th>
+
-
</tr>
+
-
<tr>
+
-
<th>Template</th>
+
-
<td>&#126;3-4&micro;g</td>
+
-
<td>&#126;2-3&micro;g</td>
+
-
<td>&#126;1.0&micro;g</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Enzyme 1</th>
+
-
<td rowspan="2">2.5&micro;l</td>
+
-
<td rowspan="2">1.5&micro;l</td>
+
-
<td rowspan="2">1.0&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Enzyme 2</th>
+
-
</tr>
+
-
<tr>
+
-
<th>Buffer (stock 10X)</th>
+
-
<td>10&micro;l</td>
+
-
<td>5&micro;l</td>
+
-
<td>2&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>BSA (stock 10X)</th>
+
-
<td>10&micro;l</td>
+
-
<td>5&micro;l</td>
+
-
<td>2&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Water</th>
+
-
<td>Up to 100&micro;l</td>
+
-
<td>Up to 50&micro;l</td>
+
-
<td>Up to 20&micro;l</td>
+
-
</tr>
+
-
</table>
+
-
<h4>Classic Cloning - for PCR products</h4>
+
<table class="tn-sp-table">
-
Incubate at 37&deg;C overnight. The day after add 1&micro;l of DpnI and incubate at 37&deg;C for 2 hours. <i>Please note that PCR product must be purified before digestion.</i>
+
<tr>
-
<h4>Classic Cloning - for plasmids</h4>
+
<th colspan="4">PCR Settings</th>
-
Incubate at 37&deg;C overnight. The day after add 1&micro;L of phosphatase (CIP or SAP) to the vector and incubate for 2 hours at 37&deg;C.
+
</tr>
-
<h4>Biobricks Cloning</h4>
+
<tr>
-
        Incubate at 37&deg;C for 30 minutes. Then disactivate the enzymes at 80&deg;C for 20 minutes.
+
<th>Step</th>
-
        <h4>Screening</h4>
+
<th>Temperature</th>
-
Incubate for 1.5h at 37&deg;C. Run all the digested product on an agarose gel to screen colonies.
+
<th>Time</th>
-
<br/><br/><hr/><br/>
+
<th>Go to</th>
-
<a href="http://66.155.211.155/nebecomm/DoubleDigestCalculatorIntl.asp">Double Digest finder</a>
+
</tr>
-
</html>|Digestion}}
+
<tr>
 +
<td>1</td>
 +
<td>94&deg;C</td>
 +
<td>2 min</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>2</td>
 +
<td>94&deg;C</td>
 +
<td>1 min</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>3</td>
 +
<td>62.5&deg;C</td>
 +
<td>1 min</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>4</td>
 +
<td>72&deg;C</td>
 +
<td>1 min 9 s</td>
 +
<td>Go to Step 2 for 30 times</td>
 +
</tr>
 +
<tr>
 +
<td>5</td>
 +
<td>72&deg;C</td>
 +
<td>7 min</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>6</td>
 +
<td>4&deg;C</td>
 +
<td>pause</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
</table>
 +
</html>|SAM-extraction-genome-coli}}
-
<h2>Details</h2>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|pSB1C3 linearization by PCR|<html>
 +
This protocol is a Phusion PCR using <b>Suffix Forward</b> and <b>Prefix Reverse</b> primers: in this way it is possible to linearize pSB1C3 removing any insert (like RFP,...). <i>Note: it is advisable to perform the PCR at least in triplicates.</i><br/>
 +
<br/>
 +
<table>
 +
<tr>
 +
<th colspan="2">PCR mix</th>
 +
</tr>
 +
<tr>
 +
<th>Template</th>
 +
<td>50ng (at least 0.50&micro;l)</td>
 +
</tr>
 +
<tr>
 +
<th>HF Buffer</th>
 +
<td>10&micro;l</td>
 +
</tr>
 +
<tr>
 +
<th>dNTPs</th>
 +
<td>1&micro;l</td>
 +
</tr>
 +
<tr>
 +
<th>Primer Fw (suff)</th>
 +
<td>2.5&micro;l</td>
 +
</tr>
 +
<tr>
 +
<th>Primer Rv (pref)</th>
 +
<td>2.5&micro;l</td>
 +
</tr>
 +
<tr>
 +
<th>Phusion</th>
 +
<td>0.5&micro;l</td>
 +
</tr>
 +
<tr>
 +
<th>Water</th>
 +
<td>up to 50&micro;l</td>
 +
</tr>
 +
</table>
 +
<br/>
 +
Given that pSB1C3 is 2070bp long and that the annealing temperature of the primers used is 58&deg;C, the PCR program to be used is the following:
 +
<table>
 +
<tr>
 +
<th>Step</th>
 +
<th>Temperature</th>
 +
<th>Time</th>
 +
<th>Type</th>
 +
<th>Go to</th>
 +
</tr>
 +
<tr>
 +
<td>1</td>
 +
<td>98&deg;C</td>
 +
<td>30sec</td>
 +
<td>&nbsp;</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>2</td>
 +
<td>98&deg;C</td>
 +
<td>10sec</td>
 +
<td>Denaturation</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>3</td>
 +
<td>58&deg;C</td>
 +
<td>20sec</td>
 +
<td>Annealing</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>4</td>
 +
<td>72&deg;C</td>
 +
<td>35sec</td>
 +
<td>Extend</td>
 +
<td>Go to step #2 for 30 times</td>
 +
</tr>
 +
<tr>
 +
<td>5</td>
 +
<td>72&deg;C</td>
 +
<td>10min</td>
 +
<td>&nbsp;</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
<tr>
 +
<td>6</td>
 +
<td>4&deg;C</td>
 +
<td>&infinit;</td>
 +
<td>&nbsp;</td>
 +
<td>&nbsp;</td>
 +
</tr>
 +
</table>
 +
Then run the PCR samples on a 1% agarose gel to verify the success of the reactions (each sample is prepared with 8&micro;l of PCR reaction and 2&micro;l of 6X loading die; 1kb ladder is good).
 +
</html>|pSB1C3-linearization-PCR}}
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|SAMsynthetase extraction from <i>E. coli</i> (strain MG1655) genome|<html>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Ethylene detection through Micro GC|<html>
-
<table>
+
<p>
-
<tr>
+
An overnight culture was diluited 1:100 and grown until O.D.600 reached 0.5. After that, the culture was induced with 5 mM arabinose and placed with a stirrer in a sealed vial (V = 15 ml) with a pierceable septum. The sample was kept for about 4 hours at 37 &deg;C in thermoshaker. After that the sample was connected to the Micro Gas Chromatograph Agilent 3000A endowed with two colums: a Mol Sieve 5A Plot and a Plot U
-
<th colspan="4">PRIMERS SEQUENCES</th>
+
column (see the tables for colums and method specifications).
-
</tr>
+
</p>
-
<tr>
+
<table class="tn-sp-table">
-
<td>Primer Forward</td>
+
<TR>
-
<td>GCCGCTTCTAGAGA AGGAGG AACTACT <b>ATG</b>GCAAAACACCTTTTT</td>
+
<th>
-
<td>prefix(only Xba1) + RBS + spacer + ATG...</td>
+
Column
-
<td>Tm = 66&deg;C</td>
+
</th>
-
</tr>
+
<th>
-
<tr>
+
Lenght
-
<td>Primer Reverse</td>
+
</th>
-
<td>CTGCCGGTCTGAAG TAATAA TACTAGTAGCGGCCGCTGCAG</td>
+
<th>
-
<td>sequence + stop codon + suffix</td>
+
Diameter
-
<td>Tm = 67.5&deg;C</td>
+
</th>
-
</tr>
+
</TR>
-
</table>
+
<tr>
 +
<td>
 +
Mol Sieve 5A Plot
 +
</td>
 +
<td>
 +
10 m
 +
</td>
 +
<td>
 +
0.32 mm
 +
</td>
 +
</tr>
 +
<tr>
 +
<td>
 +
Plot U
 +
</td>
 +
<td>
 +
8 m
 +
</td>
 +
<td>
 +
0.32 mm
 +
</td>
 +
</tr>
 +
</table>
 +
<table class="tn-sp-table">
 +
<tr>
 +
<th colspan = '2'>
 +
Method used
 +
</th>
 +
</tr>
 +
<tr>
 +
<th>
 +
t sample
 +
</th>
 +
<td>
 +
50 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t injector
 +
</th>
 +
<td>
 +
55 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t column Mol Sieve 5A Plot
 +
</th>
 +
<td>
 +
110 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t column Plot U
 +
</th>
 +
<td>
 +
70 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
p column Mol Sieve 5A Plot
 +
</th>
 +
<td>
 +
39.16 psi
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
p column Plot U
 +
</th>
 +
<td>
 +
21.76 psi
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t injection
 +
</th>
 +
<td>
 +
40 us
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t analysis
 +
</th>
 +
<td>
 +
95 s
 +
</td>
 +
</tr>
 +
</table>
 +
A measure was then taken.<br/>
 +
In order to estimate how much gas was taken for each measurement using the settings
 +
described above, a mass flow meter was connected to the micro GC.
 +
During a measurment, a flow of 3 (± 0.15) ml / min was registered. Due to the fact that a
 +
measurment lasts 10 s, the withdrawn volume was 0.5 ml.
 +
</html>|ethylene-detection-assay}}
-
SAMsynthethase gene length = 1155 bp<br>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Kinetic assay for ethylene production through micro GC|<html>
-
 
+
<p>
-
<table class="tn-sp-table">
+
An overnight culture was diluited 1:100 and grown until O.D.600 reached 0.5. After that, 3
-
<tr>
+
ml of culture induced with 5 mM arabinose was placed with a stirrer in a sealed vial (V =
-
<th colspan="2">PCR mix</th>
+
15 ml) with a pierceable septum. The sample was then connected to the Micro Gas
-
</tr>
+
Chromatograph Agilent 3000A endowed with two colums: a Mol Sieve 5A Plot and a Plot U
-
<tr><!--riga-->
+
column (see the tables for colums and method specifications).
-
<th><!--colonna-->Solutes</th>
+
</p>
-
<th>Quantities or Concentration</th>
+
<table class="tn-sp-table">
-
</tr>
+
<TR>
 +
<th>
 +
Column
 +
</th>
 +
<th>
 +
Lenght
 +
</th>
 +
<th>
 +
Diameter
 +
</th>
 +
</TR>
<tr>
<tr>
-
<td>Template(genome)</td>
+
<td>
-
<td>1ng/ &micro;l</td>
+
Mol Sieve 5A Plot
-
</tr>
+
</td>
-
<tr>
+
<td>
-
<td>dNTPs</td>
+
10 m
-
<td>0.5&micro;l</td>
+
</td>
-
</tr>
+
<td>
-
<tr>
+
0.32 mm
-
<td>Primer Forward</td>
+
</td>
-
<td>1 &micro;l</td>
+
</tr>
-
</tr>
+
<tr>
-
<tr>
+
<td>
-
<td>Primer Reverse</td>
+
Plot U
-
<td>1 &micro;l</td>
+
</td>
-
</tr>
+
<td>
-
<tr>
+
8 m
-
<td>Buffer RBC</td>
+
</td>
-
<td>1X</td>
+
<td>
-
</tr>
+
0.32 mm
-
<tr>
+
</td>
-
<td>Phusion polimerase</td>
+
</tr>
-
<td>0.3 &micro;l</td>
+
</table>
-
</tr>
+
<table class="tn-sp-table">
-
<tr>
+
<tr>
-
<td>RBC Taq polimerase</td>
+
<th colspan = '2'>
-
<td>0.25 &micro;l</td>
+
Method used
-
</tr>
+
</th>
-
<tr>
+
</tr>
-
<td>Water</td>
+
<tr>
-
<td>up to 50 &micro;l</td>
+
<th>
-
</tr>
+
t sample
-
</table>
+
</th>
 +
<td>
 +
50 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t injector
 +
</th>
 +
<td>
 +
55 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t column Mol Sieve 5A Plot
 +
</th>
 +
<td>
 +
110 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t column Plot U
 +
</th>
 +
<td>
 +
70 &deg;C
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
p column Mol Sieve 5A Plot
 +
</th>
 +
<td>
 +
39.16 psi
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
p column Plot U
 +
</th>
 +
<td>
 +
21.76 psi
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t injection
 +
</th>
 +
<td>
 +
40 us
 +
</td>
 +
</tr>
 +
<tr>
 +
<th>
 +
t analysis
 +
</th>
 +
<td>
 +
95 s
 +
</td>
 +
</tr>
 +
</table>
 +
A measurment was taken every 45 min / 1 h in order to get an overview of the time course
 +
of ethylene production.<br/>
 +
In order to estimate how much gas was taken for each measurement using the settings
 +
described above, a mass flow meter was connected to the micro GC.
 +
During a measurment, a flow of 3 (± 0.15) ml / min was registered. Due to the fact that a
 +
measurment lasts 10 s, the withdrawn volume was 0.5 ml.
 +
</html>|kinetic-ethylene-production}}
-
We have chosen to use RBC for its amplification power and Phusion for its proofreading activity<br>
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Application of B. fruity on fruit|<html>
 +
To test if our system was able to accelerate or to slow down fruit ripening, we designed an ermetically closed jam jar with a rubber hose connector. These jars contained our test-fruit and each one was connected to a flask. The flasks contained 300 ml of induced (or not) culture when its O.D.600 reached 0.8. The flasks contained also a stirrer. The cultures were maintained at 37 &deg;C using a laboratory heating plate connected to a digital thermometer immersed in the culture.<br/>
 +
For some days, every morning the culture in the flasks was substituted with a new induced (or not) colture .<br/>
 +
Furthermore, canonical jam jars (i.e.: with no connector) were adopted to contain the negative control fruit samples. All the apparatus was put under the chemical hood. <br/>
 +
<br/>
 +
<center>
 +
<i>The apparatus.</i><br/>
 +
<br/>
 +
<img src="https://static.igem.org/mediawiki/2013/1/10/Tn-2013_ripenator_apparatus.JPG" width="450px" />
 +
</center>
 +
</html>|Bfruity-application}}
-
The program set on the PCR is the following:
+
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|MeSA Detection|<html>
-
<table class="tn-sp-table">
+
<B>Sample preparation</B>
-
<tr>
+
<p>
-
<th colspan="4">PCR Settings</th>
+
To detect if <I>E. coli</I> actually produced Methyl salicilate (MeSA), we tried both qualitative (SNIFF Test) and quantitative (GC-MS) tests.
-
</tr>
+
</p>
-
<tr>
+
<p>
-
<th>Step</th>
+
All the measurement have to start by inocula in the correct antibiotics (CM) of MeSA producing cells and of normal Neb10&beta; in LB without antibiotic as control. The inocula need to be growth O/N at 37&deg;C in agitation. The following day, dilutions 1:100 were done in falcons with fresh LB and the same antibiotic; the cells were growth at 37&deg;C in agitation until O.D.600&asymp;0.6 was reached.
-
<th>Temperature</th>
+
</p>
-
<th>Time</th>
+
<p>
-
<th>Go to</th>
+
Then the cells were induced by adding Arabinose 5mM by a solution 1 M prepared by dissolving 0,150 g in 1 mL of dH2O. After two hours in some of the samples was added Salicylic Acid 2mM by a solution 1 M obtained by dissolving 0,138 g in 1 mL ethanol 70%. Then the culture were put for other 2 hours at 37&deg;C in agitation waiting for the 4 hours of induction to pass.
-
</tr>
+
</p>
-
<tr>
+
<p>
-
<td>1</td>
+
The tests could also been in M9 medium because it smells less than LB. To do this, when cells in LB reached an O.D. of 400 they were centrifuged at 4100 rpm for 10 minutes to form a pellet. The supernatant was discarded and they were resuspended in fresh M9 medium with the correct antibiotic. This was done because E.coli cells growth in M9 in much more time than in LB. The cells were therefore induced with Arabinose and after two hours SA was added where needed.
-
<td>94&deg;C</td>
+
</p>
-
<td>2 min</td>
+
At this point the samples were ready for different test.
-
<td>&nbsp;</td>
+
<br>
-
</tr>
+
<br>
-
<tr>
+
                <B> GC-FID </B>
-
<td>2</td>
+
-
<td>94&deg;C</td>
+
-
<td>1 min</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>3</td>
+
-
<td>62.5&deg;C</td>
+
-
<td>1 min</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>4</td>
+
-
<td>72&deg;C</td>
+
-
<td>1 min 9 s</td>
+
-
<td>Go to Step 2 for 30 times</td>
+
-
</tr>
+
-
<tr>
+
-
<td>5</td>
+
-
<td>72&deg;C</td>
+
-
<td>7 min</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>6</td>
+
-
<td>4&deg;C</td>
+
-
<td>pause</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
</table>
+
-
</html>|SAM-extraction-genome-coli}}
+
-
 
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|pSB1C3 linearization by PCR|<html>
+
-
This protocol is a Phusion PCR using <b>Suffix Forward</b> and <b>Prefix Reverse</b> primers: in this way it is possible to linearize pSB1C3 removing any insert (like RFP,...). <i>Note: it is advisable to perform the PCR at least in triplicates.</i><br/>
+
-
<br/>
+
-
<table>
+
-
<tr>
+
-
<th colspan="2">PCR mix</th>
+
-
</tr>
+
-
<tr>
+
-
<th>Template</th>
+
-
<td>50ng (at least 0.50&micro;l)</td>
+
-
</tr>
+
-
<tr>
+
-
<th>HF Buffer</th>
+
-
<td>10&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>dNTPs</th>
+
-
<td>1&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Primer Fw (suff)</th>
+
-
<td>2.5&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Primer Rv (pref)</th>
+
-
<td>2.5&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Phusion</th>
+
-
<td>0.5&micro;l</td>
+
-
</tr>
+
-
<tr>
+
-
<th>Water</th>
+
-
<td>up to 50&micro;l</td>
+
-
</tr>
+
-
</table>
+
-
<br/>
+
-
Given that pSB1C3 is 2070bp long and that the annealing temperature of the primers used is 58&deg;C, the PCR program to be used is the following:
+
-
<table>
+
-
<tr>
+
-
<th>Step</th>
+
-
<th>Temperature</th>
+
-
<th>Time</th>
+
-
<th>Type</th>
+
-
<th>Go to</th>
+
-
</tr>
+
-
<tr>
+
-
<td>1</td>
+
-
<td>98&deg;C</td>
+
-
<td>30sec</td>
+
-
<td>&nbsp;</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>2</td>
+
-
<td>98&deg;C</td>
+
-
<td>10sec</td>
+
-
<td>Denaturation</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>3</td>
+
-
<td>58&deg;C</td>
+
-
<td>20sec</td>
+
-
<td>Annealing</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>4</td>
+
-
<td>72&deg;C</td>
+
-
<td>35sec</td>
+
-
<td>Extend</td>
+
-
<td>Go to step #2 for 30 times</td>
+
-
</tr>
+
-
<tr>
+
-
<td>5</td>
+
-
<td>72&deg;C</td>
+
-
<td>10min</td>
+
-
<td>&nbsp;</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
<tr>
+
-
<td>6</td>
+
-
<td>4&deg;C</td>
+
-
<td>&infinit;</td>
+
-
<td>&nbsp;</td>
+
-
<td>&nbsp;</td>
+
-
</tr>
+
-
</table>
+
-
Then run the PCR samples on a 1% agarose gel to verify the success of the reactions (each sample is prepared with 8&micro;l of PCR reaction and 2&micro;l of 6X loading die; 1kb ladder is good).
+
-
</html>|pSB1C3-linearization-PCR}}
+
-
 
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Ethylene detection through Micro GC|<html>
+
<p>
<p>
-
An overnight culture was diluited 1:100 and grown until O.D.600 reached 0.5. After that, the culture was induced with 5 mM arabinose and placed with a stirrer in a sealed vial (V = 15 ml) with a pierceable septum. The sample was kept for about 4 hours at 37 &deg;C in thermoshaker. After that the sample was connected to the Micro Gas Chromatograph Agilent 3000A endowed with two colums: a Mol Sieve 5A Plot and a Plot U
+
To have a quantitative analysis we used the <i> Finnigan Trace GC ULTRA </i> with a flame ionization detector (FID). To achieve the final results and finally measure the quantity presents in our samples many tries were done with different conditions and methods. For what concerns the results presented in our wiki the column exploited was a DB5-MS capillary with a total length of 30 m (loops), an internal diameter of 0.25 mm and a film of 0.25 μm. </p>
-
column (see the tables for colums and method specifications).
+
-
</p>
+
-
<table class="tn-sp-table">
+
-
<TR>
+
-
<th>
+
-
Column
+
-
</th>
+
-
<th>
+
-
Lenght
+
-
</th>
+
-
<th>
+
-
Diameter
+
-
</th>
+
-
</TR>
+
-
<tr>
+
-
<td>
+
-
Mol Sieve 5A Plot
+
-
</td>
+
-
<td>
+
-
10 m
+
-
</td>
+
-
<td>
+
-
0.32 mm
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<td>
+
-
Plot U
+
-
</td>
+
-
<td>
+
-
8 m
+
-
</td>
+
-
<td>
+
-
0.32 mm
+
-
</td>
+
-
</tr>
+
-
</table>
+
-
<table class="tn-sp-table">
+
-
<tr>
+
-
<th colspan = '2'>
+
-
Method used
+
-
</th>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
t sample
+
-
</th>
+
-
<td>
+
-
50 &deg;C
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
t injector
+
-
</th>
+
-
<td>
+
-
55 &deg;C
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
t column Mol Sieve 5A Plot
+
-
</th>
+
-
<td>
+
-
110 &deg;C
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
t column Plot U
+
-
</th>
+
-
<td>
+
-
70 &deg;C
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
p column Mol Sieve 5A Plot
+
-
</th>
+
-
<td>
+
-
39.16 psi
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
p column Plot U
+
-
</th>
+
-
<td>
+
-
21.76 psi
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
t injection
+
-
</th>
+
-
<td>
+
-
40 us
+
-
</td>
+
-
</tr>
+
-
<tr>
+
-
<th>
+
-
t analysis
+
-
</th>
+
-
<td>
+
-
95 s
+
-
</td>
+
-
</tr>
+
-
</table>
+
-
A measure was then taken.<br/>
+
-
In order to estimate how much gas was taken for each measurement using the settings
+
-
described above, a mass flow meter was connected to the micro GC.
+
-
During a measurment, a flow of 3 (± 0.15) ml / min was registered. Due to the fact that a
+
-
measurment lasts 10 s, the withdrawn volume was 0.5 ml.
+
-
</html>|ethylene-detection-assay}}
+
-
 
+
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Kinetic assay for ethylene production through micro GC|<html>
+
<p>
<p>
-
An overnight culture was diluited 1:100 and grown until O.D.600 reached 0.5. After that, 3
+
The temperature program set for all the analyses was taken from literature <span class="tn-ref"> (Deng, C, et al. Investigation of Tomato Plant Defence Response to Tobacco Mosaic Virus by Determination of Methyl Salicylate with SPME-Capillary GC-MS. Chromatographia. 2004, Vol. 59, 3/4, pp. 263-268) </span> and adapted to our experiment in order to decrease the time of each measurement. In particular the program was set to start with the column at 80°C for 2’, to increase the temperature at the rate of 30°C/min until reaching the temperature of 280°C and maintaining it for 10’. The temperatures of the injector and of the FID were set 280°C. The carrier in the column was He 1.4 mL/min and the flow of the FID was set to be 40 mL/min of H2, 450 mL/min of air and to make up 30 mL/min of N2. The modality of the introduction of the samples in the detector was set to splitless, in particular 70 mL/min.  With these setting the retention index of MeSA was between 10.20-10.27 min. </p>
-
ml of culture induced with 5 mM arabinose was placed with a stirrer in a sealed vial (V =
+
<p>
-
15 ml) with a pierceable septum. The sample was then connected to the Micro Gas
+
The measuraments were done on liquid (the tries done on the headspace of a standard sample by injection of 1 ul of air were not positive). In particular each bacteria sample was before centrifuged and 1 mL of supernatant was filtrated with a 0.22 μm filter and then 1 μL of each sample was injected in gas chromatography to not damage the instrument. Before and after each injection the syringe was washed with acetone or ethanol for 3 times to eliminate any residual.
-
Chromatograph Agilent 3000A endowed with two colums: a Mol Sieve 5A Plot and a Plot U
+
-
column (see the tables for colums and method specifications).
+
</p>
</p>
-
<table class="tn-sp-table">
 
-
<TR>
 
-
<th>
 
-
Column
 
-
</th>
 
-
<th>
 
-
Lenght
 
-
</th>
 
-
<th>
 
-
Diameter
 
-
</th>
 
-
</TR>
 
-
<tr>
 
-
<td>
 
-
Mol Sieve 5A Plot
 
-
</td>
 
-
<td>
 
-
10 m
 
-
</td>
 
-
<td>
 
-
0.32 mm
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<td>
 
-
Plot U
 
-
</td>
 
-
<td>
 
-
8 m
 
-
</td>
 
-
<td>
 
-
0.32 mm
 
-
</td>
 
-
</tr>
 
-
</table>
 
-
<table class="tn-sp-table">
 
-
<tr>
 
-
<th colspan = '2'>
 
-
Method used
 
-
</th>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
t sample
 
-
</th>
 
-
<td>
 
-
50 &deg;C
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
t injector
 
-
</th>
 
-
<td>
 
-
55 &deg;C
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
t column Mol Sieve 5A Plot
 
-
</th>
 
-
<td>
 
-
110 &deg;C
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
t column Plot U
 
-
</th>
 
-
<td>
 
-
70 &deg;C
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
p column Mol Sieve 5A Plot
 
-
</th>
 
-
<td>
 
-
39.16 psi
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
p column Plot U
 
-
</th>
 
-
<td>
 
-
21.76 psi
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
t injection
 
-
</th>
 
-
<td>
 
-
40 us
 
-
</td>
 
-
</tr>
 
-
<tr>
 
-
<th>
 
-
t analysis
 
-
</th>
 
-
<td>
 
-
95 s
 
-
</td>
 
-
</tr>
 
-
</table>
 
-
A measurment was taken every 45 min / 1 h in order to get an overview of the time course
 
-
of ethylene production.<br/>
 
-
In order to estimate how much gas was taken for each measurement using the settings
 
-
described above, a mass flow meter was connected to the micro GC.
 
-
During a measurment, a flow of 3 (± 0.15) ml / min was registered. Due to the fact that a
 
-
measurment lasts 10 s, the withdrawn volume was 0.5 ml.
 
-
</html>|kinetic-ethylene-production}}
 
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|Application of B. fruity on fruit|<html>
 
-
To test if our system was able to accelerate or to slow down fruit ripening, we designed an ermetically closed jam jar with a rubber hose connector. These jars contained our test-fruit and each one was connected to a flask. The flasks contained 300 ml of induced (or not) culture when his O.D.600 reached 0.8. The flasks contained also a stirrer. The cultures were maintained at 37 &deg;C using a laboratory heating plate connected to a digital thermometer immersed in the culture.<br/>
 
-
For six days, every morning the culture in the flasks was substituted with a new induced (or not) colture .<br/>
 
-
Furthermore, canonical jam jars (i.e.: with no connector) were adopted to contain the negative control fruit samples.<br/>
 
-
<br/>
 
-
<center>
 
-
<i>The apparatus.</i><br/>
 
-
<br/>
 
-
<img src="https://static.igem.org/mediawiki/2013/1/10/Tn-2013_ripenator_apparatus.JPG" width="450px" />
 
-
</center>
 
-
</html>|Bfruity-application}}
 
-
{{:Team:UNITN-Trento/Templates/Styles/ProtocolSpoiler|MeSA Detection|<html>
+
</html>|MeSA-detection}}
-
 
+
-
<B>Sample preparation</B>
+
-
<p>
+
-
To detect if <I>E. coli</I> actually produced Methyl salicilate (MeSA), we tried both qualitative (SNIFF Test) and quantitative (GC-MS) tests.
+
-
</p>
+
-
<p>
+
-
All the measurement have to start by inocula in the correct antibiotics (CM) of MeSA producing cells and of normal Neb10&beta; in LB without antibiotic as control. The inocula need to be growth O/N at 37&deg;C in agitation. The following day, dilutions 1:100 were done in falcons with fresh LB and the same antibiotic; the cells were growth at 37&deg;C in agitation until O.D.600&asymp;0.6 was reached.
+
-
</p>
+
-
<p>
+
-
Then the cells were induced by adding Arabinose 5mM by a solution 1 M prepared by dissolving 0,150 g in 1 mL of dH2O. After two hours in some of the samples was added Salicylic Acid 2mM by a solution 1 M obtained by dissolving 0,138 g in 1 mL ethanol 70%. Then the culture were put for other 2 hours at 37&deg;C in agitation waiting for the 4 hours of induction to pass.
+
-
</p>
+
-
<p>
+
-
The tests could also been in M9 medium because it smells less than LB. To do this, when cells in LB reached an O.D. of 400 they were centrifuged at 4100 rpm for 10 minutes to form a pellet. The supernatant was discarded and they were resuspended in fresh M9 medium with the correct antibiotic. This was done because E.coli cells growth in M9 in much more time than in LB. The cells were therefore induced with Arabinose and after two hours SA was added where needed.
+
-
</p>
+
-
At this point the samples were ready for different test.
+
-
 
+
-
</html>|MeSA-detection}}
+
 +
<html></div>
 +
    <div class="sheet-2">
 +
        <a href="https://2013.igem.org/Team:UNITN-Trento/Notebook">
 +
            <img class="tn-arr-prev" src="https://static.igem.org/mediawiki/2013/6/6f/Tn-2013-arr-Prot_prev.png" />
 +
        </a>
 +
        <a href="javascript:toTop('#tn-main-wrap-wrap');">
 +
            <img src="https://static.igem.org/mediawiki/2013/6/6e/Tn-2013-arr-AAA_TOP.png" />
 +
        </a>
 +
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Latest revision as of 16:30, 3 October 2013


PCRs

Tm Calculator (1)
Tm Calculator (2)

RBC Taq DNA Polymerase Protocol V2.0
The optimal conditions for the concentration of RBC Taq DNA Polymerase, MgCl2, primers and template DNA will depend on the system being utilized. It may be necessary to determine the optimal conditions for each individual component.

1) Add the following components to a sterile microtube on ice:
Components Volume Final Concentration
10X Reaction buffer 5µl 1X
10mM dNTP mix 0.5µl 0.1µm
Primer mix (10µM each) 1µl 0.2µm
Template DNA 0.5⁓10µl n/a
RBC Taq DNA polymerase (5U/µl) 0.25µl 1.25units
ddH2O to 50µl n/a

2) Suggested Reaction Parameters for RBC Taq DNA Polymerase
Segment Number of cycles Temperature Duration
1 1 94°C 1⁓3 minutes
2 25⁓35 94°C (denature)
5 degree lower than Tm of Primer
72°C (extend) 		30 seconds⁓1 30
seconds⁓1 minute
1minute/Kbp
3 1 72°C
4°C 		7 minutes

3) Analyze the amplification products by agarose gel electrophoresis and visualize by ethidium bromide staining.

External link

Phusion PCR Protocol
Component 50 µl Reaction
Nuclease-free water to 50 µl
5X Phusion HF or GC Buffer 10 µl
10 mM dNTPs 1 µl
10 µM Forward Primer 2.5 µl
10 µM Reverse Primer 2.5 µl
Template DNA Variable
DMSO (optional) (1.5 µl)
Phusion DNA Polymerase 0.5 µl

For the template DNA, use 1 µl (50 ng/ µl) of E.coli genomic DNA.

Set the PCR with the following parameters:

Cycle step Cycles Temp [°C] Time [s]
Initial denaturation 1 98 30
Denaturation 30 98 5-10
Annealing   72 10-30
Extention   72 10-30*kb
Final extention 1 72 5-10 [min]
Hold 1 4 ∞

OneTaq + Phu PCR
1) Add the following components in a sterile microtube on ice:
Reaction Mix
5x One Taq Buffer 10 µl
Fwd Primer 1 µl
Rev Primer 1 µl
10 mM dNTP's 1 µl
One Taq 0.25 µl
Phusion 0.3 µl
Template DNA 50-100 ng
H20 up to 50 µl
2) Suggested reaction parameters:
Cycle Step Cycles Temp [°C] Time [s]
Inital denaturation 1 94 120
Denaturation 30 94 30
Annealing 60 * 60
Extension 68 60 s/Kbase
Final Extension 1 68 300
Hold 1 4 ∞

Illustra GFX PCR DNA and Gel Band Purification Kit
  1. Sample Capture:
    • Add 250 µl of Capture buffer type 3 to the sample.
    • Mix and control that the color is yellow or pale orange.
  2. Sample Binding:
    • Transfer the mix in the assembled GFX MicroSpin column and Collection tube.
    • Spin for 30s at 16000*g (⁓13000rpm) and discard the Collection tube.
    • Replace GFX MicroSpin column in the same Collection tube.
  3. Wash and Dry:
    • Add 500 µl of Wash buffer type 1.
    • Spin for 30s at 16000*g (⁓13000rpm) and discard the Collection tube.
    • Transfer the GFX MicroSpin column in a clean tube.
  4. Eluition:
    • Add 50 µl of distilled water.
    • Incubate for 1 minute at room temperature.
    • Spin for 1 minute at 13000rpm.
    • Retain flowthrough.
    • Quantify the sample at Nanodrop and label it with its concentration.

External protocol
External site

Wizard® SV Gel and PCR Clean-Up System Technical Bulletin

Cells

Competent cells preparation
  • Transformation Buffer: sterile 10 mM Tris-HCl, pH 7.0, 50 mM CaCl2
  • Grow a 50 mL culture in LB at 37 deg C from 1 colony.
  • When OD ~ 0.5, collect the cells in a sterile Falcon tube and chill on ice for 10min.
  • Centrifuge at 5000 rpm for 10 min at 4 deg C. Discard supernatant.
  • Resuspend cells in 15 mL of transformation buffer.
  • Chill on ice for 15 min. Spin at 5000 rpm for 10 min at 4 deg C. Discard supernatant.
  • Resuspend cells in 4 mL of transformation buffer.

The cells are now ready to be transformed. They can be stored in this state at 4 deg C for under a week.
Alternatively, the competent cells can be aliquoted (200µL), adding glycerol to a final conc of 15% (v/v), and the cells stored at –80 deg C.
Every time you make new competent cells you should check for possible contaminations. Plate an aliquot of the new cells in LB plates + antibiotic (i.e. ampicillin, chloramphenicol, kanamycin). Strains such as DH5a, NEB10b, Novablue, should not grow in the presence of antibiotics.

Competent cells transformation
Competent cells must always stay in ice
  • Thaw home made CaCl2 competent cells on ice.
  • Add 1µL of DNA to 200µL of competent cells (concentration of DNA stock should be between 50–150 ng/µL).
  • Incubate on ice for 30 min.
  • Heat shock at 42°C for exactly 2 min.
  • Incubate on ice 1 min.
  • Add 500-700µL of LB (or SOC) and shake at 37°C for 1 h.
  • Plate the cells (use plates with the appropriate antibiotic according to your plasmid).

You can either plate a small amount (200µL) of the cells or more.
You should try a few conditions the first time and then choose the one that gives 30–300 separate colonies.
If few cells are expected: spin down the cells at 2500 rpm, discard supernatant and resuspend in 150–200µL of LB and plate all the cells.

Plates must be labeled as follow:
strain – [resistance] – part – “(plasmid)” – YOUR_NAME – date

For ligation you should increase the amount of DNA to be transformed (see cloning protocol).
  • Incubate the plates O/N upside down at 37°C.
!!!Don't plate before four o'clock!!!

B. subtilis transformation (from Groeningen iGEM2013 team)
Prepare the competence medium as follow:
Competence medium (MC completed)
H2O 1.8 ml
10x MC 200 ul
MgSO4 1M 6.7 ul
trp 1% (for trp - strains) 10 ul
MC 10x
for 100 ml
K2HPO4 3H2O 14.036 g
KH2PO4 5.239 g
Glucose 20 g
Tri-Na Citrate 300 mM 10 ml
Ferric NH4 Citrate 1 ml
Casein Hydrolysate 1 g
K glutamate 2 g
Mix everything in 40-50 ml H2O, then adjust to 100 ml, filter sterilize, freeze at -20 C
Tri-Na Citrate 300mM 8.823 g in 100 ml H2O
Ferric NH4 citrate 2.2 g in 100 ml H2O
--> wrap in aluminium foil!!

  1. Pick up a nice big colony and drop it in 2 ml of completed MC (1x) (see below);
  2. Grow at 37 °C for 5 hours (or more if culture is not really turbid);
  3. Mix 400 ul of culture with DNA (usually 1 ug) in fresh tube (i.e. 15 ml tubes losely closed);
  4. Grow for additional 2 h at 37 °C;
  5. Plate all on selective antibiotic plates, and incubate at 37 °C O/N

Competent cells transformation efficiency kit (registry)

Gram Staining Protocol
  1. Transfer 100 ul of sterile distilled water in an eppendorf;
  2. Pick up a colony using a tip and resuspend it in the sterile water;
  3. Verify that the glass slide is cleaned and degreased or clean it with 70% alcohol;
  4. Transfer 20 ul of bacterial suspension on the slide;
  5. Swipe gently bacterial suspension with the aid of a sterile loop to occupy 1-2 cm at the center of the slide;
  6. Let dry the slide by evaporation;
  7. Cover the central part of the slide with methanol, remove the excess and let it evaporate;
  8. Sock the slide in the crystal violet solution for 1 min, wash then with sterile water;
  9. Sock the slide in the lugol solution for 1 min, wash then with sterile water;
  10. Pour Gram bleach solution on the product for 20-30 s, wash then with sterile water;
  11. Sock the slide in the safranin solution for 1 min, wash then with sterile water;
  12. Finally let dry the slide and observe it with the microscope.

MNGE medium
MNGE medium 40 ml
Compound Amount
10xMN-Medium 3,68ml
Sterile water 33,12ml
Glucose (20%) 4ml
K-Glutamat (40%) 200µl
Fe[III]-ammonium-citrate (2,2 mg/ml) 200µl
Tryptophan (5 mg/ml) 400µl
MgSO4 (1M) 120µl
threonine (5 mg/ml) 400µl
MN medium 10X 50 ml
Compound Amount
K2HPO4 (x3 H2O) 6,8 g
KH2PO4 3 g
Na-citrate (x 2 H2O) 0.5 g

Difco Sporulation Medium (from LMU - Munich iGEM team)
Nutrienti Broth 8 g
KCl 1 g
MgSO4 1 M 1 ml
MnCl2 10 mM 1 ml
H2O (bidest) ad to 1.000 ml
after autoclave add
CaCl2 1 M 0,5 ml
FeSO4 1 mM 1 ml

Miscellaneous

Parts extraction and transformation (NEB10β).
  1. Label the empty eppendorfs that will contain the parts, including antibiotic resistance, part denomination and position (and on which kit).
  2. Spot the correct well and label it with a pen.
  3. Push a hole with the pin of a micropipette and resuspend the content with 10ul water.
  4. When the color is dark red, wait 1 minute.
  5. Move the re-suspended part into the correct empty eppendorf.

Wizard® Plus SV Minipreps DNA Purification System Technical Bulletin

Biobrick cloning

Prepare the digestion mix as follow:

DNA 500 ng
10X NEB Buffer 2.5 ul
10X BSA 2.5 ul
E1 1 ul
E2 1 ul
H2O Up to 25 ul

Incubate the reaction mix at 37 °C for 30 min. Disactivate then the enzymes incubating the mix at 80 °C for 20 min. The next step will be the ligation of the digestion products. The raction mix is prepared as follow:

Insert 3 fold excess
Vector 40 ng
10X T4 Ligase Buffer 2 ul
T4 Ligase 1 ul
H2O Up to 20 ul

Gently mix the reaction and incubate for 30 min at room temperature. Disactivate the enzymes at 80 °C for 20 min. Transorm 10 ul of the reaction in competent cells.

Ligation
Prepare the reaction mix, you can use the automatic calculator.
Automatic Calculator
Plasmid concentration (ng/µl)
Plasmid length (bp)
Insert concentration (ng/µl)
Insert length (bp)
Amount of plasmid you want to use (ng)
Volume of reaction (µl)
Buffer concentration (X)
Amount of insert needed for 1:1 (ng) -

Results
  ctrl 1:1 1:2 1:3 1:4
Buffer (µl to have 1X)
Plasmid (µl)
Insert (µl) 0
Ligase (µl) 1
Water (µl)
Prepare your reaction and incubate at RT for 2 hours. Transform half of the reaction into 200μL of “homemade” competent cells (DH5α, NEB10β, Novablue or other appropriate strains) following a standard transformation protocol. Plate all the cells.

Digestion
Assemble the digestion mix as follow (check the correct buffer with the Double Digest finder).
Classic Cloning Screening
PCR products Plasmids
Template ~3-4µg ~2-3µg ~1.0µg
Enzyme 1 2.5µl 1.5µl 1.0µl
Enzyme 2
Buffer (stock 10X) 10µl 5µl 2µl
BSA (stock 10X) 10µl 5µl 2µl
Water Up to 100µl Up to 50µl Up to 20µl

Classic Cloning - for PCR products

Incubate at 37°C overnight. The day after add 1µl of DpnI and incubate at 37°C for 2 hours. Please note that PCR product must be purified before digestion.

Classic Cloning - for plasmids

Incubate at 37°C overnight. The day after add 1µL of phosphatase (CIP or SAP) to the vector and incubate for 2 hours at 37°C.

Biobricks Cloning

Incubate at 37°C for 30 minutes. Then disactivate the enzymes at 80°C for 20 minutes.

Screening

Incubate for 1.5h at 37°C. Run all the digested product on an agarose gel to screen colonies.


Double Digest finder

Details

SAMsynthetase extraction from E. coli (strain MG1655) genome
PRIMERS SEQUENCES
Primer Forward GCCGCTTCTAGAGA AGGAGG AACTACT ATGGCAAAACACCTTTTT prefix(only Xba1) + RBS + spacer + ATG... Tm = 66°C
Primer Reverse CTGCCGGTCTGAAG TAATAA TACTAGTAGCGGCCGCTGCAG sequence + stop codon + suffix Tm = 67.5°C
SAMsynthethase gene length = 1155 bp
PCR mix
Solutes Quantities or Concentration
Template(genome) 1ng/ µl
dNTPs 0.5µl
Primer Forward 1 µl
Primer Reverse 1 µl
Buffer RBC 1X
Phusion polimerase 0.3 µl
RBC Taq polimerase 0.25 µl
Water up to 50 µl
We have chosen to use RBC for its amplification power and Phusion for its proofreading activity
The program set on the PCR is the following:
PCR Settings
Step Temperature Time Go to
1 94°C 2 min  
2 94°C 1 min  
3 62.5°C 1 min  
4 72°C 1 min 9 s Go to Step 2 for 30 times
5 72°C 7 min  
6 4°C pause  

pSB1C3 linearization by PCR
This protocol is a Phusion PCR using Suffix Forward and Prefix Reverse primers: in this way it is possible to linearize pSB1C3 removing any insert (like RFP,...). Note: it is advisable to perform the PCR at least in triplicates.

PCR mix
Template 50ng (at least 0.50µl)
HF Buffer 10µl
dNTPs 1µl
Primer Fw (suff) 2.5µl
Primer Rv (pref) 2.5µl
Phusion 0.5µl
Water up to 50µl

Given that pSB1C3 is 2070bp long and that the annealing temperature of the primers used is 58°C, the PCR program to be used is the following:
Step Temperature Time Type Go to
1 98°C 30sec    
2 98°C 10sec Denaturation  
3 58°C 20sec Annealing  
4 72°C 35sec Extend Go to step #2 for 30 times
5 72°C 10min    
6 4°C &infinit;    
Then run the PCR samples on a 1% agarose gel to verify the success of the reactions (each sample is prepared with 8µl of PCR reaction and 2µl of 6X loading die; 1kb ladder is good).

Ethylene detection through Micro GC

An overnight culture was diluited 1:100 and grown until O.D.600 reached 0.5. After that, the culture was induced with 5 mM arabinose and placed with a stirrer in a sealed vial (V = 15 ml) with a pierceable septum. The sample was kept for about 4 hours at 37 °C in thermoshaker. After that the sample was connected to the Micro Gas Chromatograph Agilent 3000A endowed with two colums: a Mol Sieve 5A Plot and a Plot U column (see the tables for colums and method specifications).

Column Lenght Diameter
Mol Sieve 5A Plot 10 m 0.32 mm
Plot U 8 m 0.32 mm
Method used
t sample 50 °C
t injector 55 °C
t column Mol Sieve 5A Plot 110 °C
t column Plot U 70 °C
p column Mol Sieve 5A Plot 39.16 psi
p column Plot U 21.76 psi
t injection 40 us
t analysis 95 s
A measure was then taken.
In order to estimate how much gas was taken for each measurement using the settings described above, a mass flow meter was connected to the micro GC. During a measurment, a flow of 3 (± 0.15) ml / min was registered. Due to the fact that a measurment lasts 10 s, the withdrawn volume was 0.5 ml.

Kinetic assay for ethylene production through micro GC

An overnight culture was diluited 1:100 and grown until O.D.600 reached 0.5. After that, 3 ml of culture induced with 5 mM arabinose was placed with a stirrer in a sealed vial (V = 15 ml) with a pierceable septum. The sample was then connected to the Micro Gas Chromatograph Agilent 3000A endowed with two colums: a Mol Sieve 5A Plot and a Plot U column (see the tables for colums and method specifications).

Column Lenght Diameter
Mol Sieve 5A Plot 10 m 0.32 mm
Plot U 8 m 0.32 mm
Method used
t sample 50 °C
t injector 55 °C
t column Mol Sieve 5A Plot 110 °C
t column Plot U 70 °C
p column Mol Sieve 5A Plot 39.16 psi
p column Plot U 21.76 psi
t injection 40 us
t analysis 95 s
A measurment was taken every 45 min / 1 h in order to get an overview of the time course of ethylene production.
In order to estimate how much gas was taken for each measurement using the settings described above, a mass flow meter was connected to the micro GC. During a measurment, a flow of 3 (± 0.15) ml / min was registered. Due to the fact that a measurment lasts 10 s, the withdrawn volume was 0.5 ml.

Application of B. fruity on fruit
To test if our system was able to accelerate or to slow down fruit ripening, we designed an ermetically closed jam jar with a rubber hose connector. These jars contained our test-fruit and each one was connected to a flask. The flasks contained 300 ml of induced (or not) culture when its O.D.600 reached 0.8. The flasks contained also a stirrer. The cultures were maintained at 37 °C using a laboratory heating plate connected to a digital thermometer immersed in the culture.
For some days, every morning the culture in the flasks was substituted with a new induced (or not) colture .
Furthermore, canonical jam jars (i.e.: with no connector) were adopted to contain the negative control fruit samples. All the apparatus was put under the chemical hood.

The apparatus.

MeSA Detection
Sample preparation

To detect if E. coli actually produced Methyl salicilate (MeSA), we tried both qualitative (SNIFF Test) and quantitative (GC-MS) tests.

All the measurement have to start by inocula in the correct antibiotics (CM) of MeSA producing cells and of normal Neb10β in LB without antibiotic as control. The inocula need to be growth O/N at 37°C in agitation. The following day, dilutions 1:100 were done in falcons with fresh LB and the same antibiotic; the cells were growth at 37°C in agitation until O.D.600≈0.6 was reached.

Then the cells were induced by adding Arabinose 5mM by a solution 1 M prepared by dissolving 0,150 g in 1 mL of dH2O. After two hours in some of the samples was added Salicylic Acid 2mM by a solution 1 M obtained by dissolving 0,138 g in 1 mL ethanol 70%. Then the culture were put for other 2 hours at 37°C in agitation waiting for the 4 hours of induction to pass.

The tests could also been in M9 medium because it smells less than LB. To do this, when cells in LB reached an O.D. of 400 they were centrifuged at 4100 rpm for 10 minutes to form a pellet. The supernatant was discarded and they were resuspended in fresh M9 medium with the correct antibiotic. This was done because E.coli cells growth in M9 in much more time than in LB. The cells were therefore induced with Arabinose and after two hours SA was added where needed.

At this point the samples were ready for different test.

GC-FID

To have a quantitative analysis we used the Finnigan Trace GC ULTRA with a flame ionization detector (FID). To achieve the final results and finally measure the quantity presents in our samples many tries were done with different conditions and methods. For what concerns the results presented in our wiki the column exploited was a DB5-MS capillary with a total length of 30 m (loops), an internal diameter of 0.25 mm and a film of 0.25 μm.

The temperature program set for all the analyses was taken from literature (Deng, C, et al. Investigation of Tomato Plant Defence Response to Tobacco Mosaic Virus by Determination of Methyl Salicylate with SPME-Capillary GC-MS. Chromatographia. 2004, Vol. 59, 3/4, pp. 263-268) and adapted to our experiment in order to decrease the time of each measurement. In particular the program was set to start with the column at 80°C for 2’, to increase the temperature at the rate of 30°C/min until reaching the temperature of 280°C and maintaining it for 10’. The temperatures of the injector and of the FID were set 280°C. The carrier in the column was He 1.4 mL/min and the flow of the FID was set to be 40 mL/min of H2, 450 mL/min of air and to make up 30 mL/min of N2. The modality of the introduction of the samples in the detector was set to splitless, in particular 70 mL/min. With these setting the retention index of MeSA was between 10.20-10.27 min.

The measuraments were done on liquid (the tries done on the headspace of a standard sample by injection of 1 ul of air were not positive). In particular each bacteria sample was before centrifuged and 1 mL of supernatant was filtrated with a 0.22 μm filter and then 1 μL of each sample was injected in gas chromatography to not damage the instrument. Before and after each injection the syringe was washed with acetone or ethanol for 3 times to eliminate any residual.

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