Team:Nevada/Notebook

From 2011.igem.org

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<font size="5">Week 2 - June 5-11
 
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<p><font color="red">E. Coli
 
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<img src="https://static.igem.org/mediawiki/2011/a/a2/Growth_Curve_6_10_11.png" class="shadow" style="float:center"
 
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<img src="https://static.igem.org/mediawiki/2011/b/bc/Log_Growth_Curve_6_10_11.png" class="shadow" style="float:center"
 
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<p><font color="blue">Cyano</font>
 
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Assay for ethanol detection.  Simple one-step
 
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assay takes ethanol and NAD+ into
 
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acetylaldahyde and NADH with use of alcohol
 
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Deh (ADH) enzyme.  Final NADH concentration
 
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can be determined using its molar extinction
 
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coefficient and absorbance at 340.0 nm, and
 
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is proportionate to initial ethanol
 
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concetration.
 
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Ethanol concentrations ranging from 0.05mM-
 
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0.25mM were assayed with 173U/mL ADH.
 
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Results: Final NADH concentrations were
 
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calculated to be off by a factor of ten due
 
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to unexpectedly low absorbancies.  Assay was
 
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repeated with increased ethanol concentrations
 
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(0.5-10mM), but absorbancies remained lower
 
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than expected.
 
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Disscussion: It was determined that this assay
 
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was now sensitive enough for the range of
 
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ethanol concentrations that will need to be
 
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detected in our project, therefore we will use
 
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other means of ethanol detection using simple
 
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primary alcohol detection methods using oxidizing reagents.</font>
 
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<p><font color="black">Media</font>
 
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<font size="5">Week 3- June 12-18
 
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<p><font color="red">E. Coli</font>
 
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<p><font color="blue">Cyano</font>
 
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<p><font color="green">Enzymology</font>
 
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Revision as of 19:30, 30 June 2011


Week 1 - June 1-4
-----------------------

E. Coli
Blah Blah Blah

Cyano
Blah Blah Blah

Hexokinase coupled assay used to quantitate amounts of cyanobacteria glucose secretion.
    Rxn:
  • 1. glucose + ATP --Hx-> G-6-P + ADP
  • 2. G-6-P + NAD+ --G-6-PDeH-> G-6-P + NADH

Reaction used Glucose assay kit (Genzyme) containing 2000U/L Hexokinase reagent and 4000U/L G-6-P DeH and measured glucose concentrations ranging from 0.05mM-0.25mM and absorbances were measured at 340.0 nm.
Week 1                                                                                                                                                         Week 2