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Team:HokkaidoU Japan/RBS/Results
From 2013.igem.org
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</p> | </p> | ||
<dl> | <dl> | ||
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<dt>negative control</dt><dd>No insert</dd> | <dt>negative control</dt><dd>No insert</dd> | ||
| + | <dt>positive control</dt><dd>pTet-B0034-LacZα-dT</dd> | ||
<dt>SD2</dt><dd>pTet-SD2-LacZα-dT (BBa_K1084121)</dd> | <dt>SD2</dt><dd>pTet-SD2-LacZα-dT (BBa_K1084121)</dd> | ||
<dt>SD4</dt><dd>pTet-SD4-LacZα-dT (BBa_K1084122)</dd> | <dt>SD4</dt><dd>pTet-SD4-LacZα-dT (BBa_K1084122)</dd> | ||
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</div> | </div> | ||
<div class="fig fig800"> | <div class="fig fig800"> | ||
| - | <img src="https://static.igem.org/mediawiki/2013/ | + | <img src="https://static.igem.org/mediawiki/2013/3/32/HokkaidoU2013_RBS_results2_new_800.png"> |
<div><span class="bold">fig.2: LacZα expression.</span> x axis: sample name, y axis: standardized expression (positive control = 1.0), bar: standard error. n=24.</div> | <div><span class="bold">fig.2: LacZα expression.</span> x axis: sample name, y axis: standardized expression (positive control = 1.0), bar: standard error. n=24.</div> | ||
</div> | </div> | ||
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<p> | <p> | ||
We measured absorbance of catalytic reaction solution at 595 nm, standardized using positive control and made into graph (fig.2). | We measured absorbance of catalytic reaction solution at 595 nm, standardized using positive control and made into graph (fig.2). | ||
| - | Construct with SD4 showed the strongest LacZα activity. Second strongest was the SD8, followed by SD6. SD2 had the weakest activity. There is a significant difference in translation efficiency of our RBSs | + | Construct with SD4 showed the strongest LacZα activity. Second strongest was the SD8, followed by SD6. SD2 had the weakest activity. There is a significant difference in translation efficiency of our RBSs. |
</p> | </p> | ||
Revision as of 16:09, 28 October 2013
Maestro E.coli
RBS
Results
We made these constructs to measure translation efficiency of our RBSs. We assembled LacZα to performed β-Galactosidase assay.
- negative control
- No insert
- positive control
- pTet-B0034-LacZα-dT
- SD2
- pTet-SD2-LacZα-dT (BBa_K1084121)
- SD4
- pTet-SD4-LacZα-dT (BBa_K1084122)
- SD6
- pTet-SD6-LacZα-dT (BBa_K1084123)
- SD8
- pTet-SD8-LacZα-dT (BBa_K1084124)
We moved our constructs to pSB3K3 plasmid, cultured for 9 hrs in 5 mL LB media round tubes, and performed β-Galactisidase assay. Reaction time was 2 hrs.
LacZα protein hydrolyses substrate (Chlorophenol red-β-D-galactopyranoside), which is yellow. Product of this reaction has red color. Therefore, solution will turn deep orange if LacZα expression is strong (fig.1).
We measured absorbance of catalytic reaction solution at 595 nm, standardized using positive control and made into graph (fig.2). Construct with SD4 showed the strongest LacZα activity. Second strongest was the SD8, followed by SD6. SD2 had the weakest activity. There is a significant difference in translation efficiency of our RBSs.
