Team:Groningen/protocols/Transformation

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(Created page with "'''B. subtilis transformation''' <br/>Losick protocol <br/>-1 Day: Streak out strain and incubate plate o/n at 37 °C. <br/>Transformation (D-Day): <br/>1. Pick up a nice big ...")
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'''B. subtilis transformation'''
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<h2>B. subtilis transformation</h2>
<br/>Losick protocol
<br/>Losick protocol
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<br/>1. Pick up a nice big colony and drop it in 2 ml of completed MC (1x)(see sub1).
<br/>1. Pick up a nice big colony and drop it in 2 ml of completed MC (1x)(see sub1).
<br/>2. Grow at 37 °C for 5 hours (more if culture is not really turbid).
<br/>2. Grow at 37 °C for 5 hours (more if culture is not really turbid).
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<br/>3. Mix 400 µl of culture with DNA* in fresh tube (i.e. 15 ml tubes loosely closed – aeration) (*usually 1 µl. Then 10 µl of Quiagen plasmid miniprep or <1 µl of  chromosal prep)
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<br/>3. Mix 400 µl of culture with DNA* in fresh tube (i.e. 15 ml tubes loosely closed – aeration)  
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<br/>4. Grow for an additional 2 hours at 37 °C.
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<br>(*usually 1 µl. Then 10 µl of Quiagen plasmid miniprep or <1 µl of  chromosal prep)
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<br/>5. Plate all on selective antibiotic plates, and incubates at 37°C o/n.
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<br>4. Grow for an additional 2 hours at 37 °C.
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<br>5. Plate all on selective antibiotic plates, and incubates at 37°C o/n.<br/>
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<td>KH2 PO$</td>
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<td>KH2 PO4</td>
<td>5,239g</td>
<td>5,239g</td>
<td>0,5239g</td>
<td>0,5239g</td>
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Add 50ml H2O, Mix, add H2O till 100ml, Filter sterilize and freeze at -20 °C
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Add 50ml H2O, Mix, add H2O till 100ml, Filter sterilize and freeze at -20 °C<br/>
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Wrap in aluminum
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Wrap in aluminium<br/>
<br/>Sub4: Ferric NH4 citrate
<br/>Sub4: Ferric NH4 citrate
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Revision as of 08:40, 26 July 2013

B. subtilis transformation


Losick protocol
-1 Day: Streak out strain and incubate plate o/n at 37 °C.
Transformation (D-Day):
1. Pick up a nice big colony and drop it in 2 ml of completed MC (1x)(see sub1).
2. Grow at 37 °C for 5 hours (more if culture is not really turbid).
3. Mix 400 µl of culture with DNA* in fresh tube (i.e. 15 ml tubes loosely closed – aeration)
(*usually 1 µl. Then 10 µl of Quiagen plasmid miniprep or <1 µl of chromosal prep)
4. Grow for an additional 2 hours at 37 °C.
5. Plate all on selective antibiotic plates, and incubates at 37°C o/n.

Sub1: Copmpetence medium (MC completed)
H20 1,8 ml
10x MC (sub2) 200 ul filter sterilize
MgSO4 6,7 ul autoclave sterilize
Tryptophan 1% 10 ul filter steralize, wrap in Al

Sub2: MC 10x
for 100 ml 10 ml
K2H PO4 14,036g 1,4036g
KH2 PO4 5,239g 0,5239g
Glucose 20g 2g
Tri-Na Citrate 300mM(Sub3) 10ml 1ml
Ferric NH4 citrate(Sub4) 1ml 0,1ml
Casein Hydrolysate 1g 0,1g
Potassium Glutamate 2g 0,2g
Add 50ml H2O, Mix, add H2O till 100ml, Filter sterilize and freeze at -20 °C

Sub3: Tri-Na Citrate 300mM
Tri-Na Citrate 0,8823g
H2O 10ml
Wrap in aluminium

Sub4: Ferric NH4 citrate
Ferric NH4 citrate 0,22g
H2O 10ml
Wrap in aluminium