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Team:KAIST Korea/Notebook Labnote/2012 10
From 2012.igem.org
2012 KAIST Korea
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Notebook : Labnote-October
Labnote
OctoberOctober 1st 2012
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Back to the CalendarOctober 2nd 2012
Flip FlopbFMO template preparation with new primer
Results
We have found that our bFMO sequence was wrong. So that we have ordered new primers with right sequence.
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October 3rd 2012
Flip FlopVisualization of inversion from GFP to RFP
Procedure
bfmo gene is constructed in the vector(pJ401, Km registance) and transformed into DH5α.50λ cell from stock is inoculated in 5mL LB
Visualization of inversion from GFP to RFP
Procedure
We sampled the cell every 3hr. We induced one group of samples and un-induced another group of samples as a control. We took the picture of cell with confocal microscope at absorbance 500nm for GFP expression and 600nm for RFP expression.
Results
Discussion
We obtained proper data. Un-induced sample doesn’t show measurable RFP expression throughout the culture. However, induced sample shows the increase of RFP expression. Increase of GFP level in induced sample is due to the stability of GFP and time delay before inversion.
Insert DNA preparation with OE pcr
Results
Cloning
Results
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October 4th 2012
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October 5th 2012
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October 6th 2012
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October 7th 2012
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October 8th 2012
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October 9th 2012
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October 10th 2012
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October 11th 2012
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October 12th 2012
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October 13th 2012
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October 14th 2012
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October 15th 2012
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October 16th 2012
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October 17th 2012
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October 18th 2012
Flip FlopCell culture in 96-well plate for Indigo expression time optimization
Procedure
We set the O.D value to 0.1 and cultured 1.5ml cell in 96 deep well plate. At each time point, we transferred 1ml cell from 96 deep well plate to EP tube and 200λ cell to flat 96 well plate for O.D check.
After cell down in EP tube, we discarded the supernatant and resuspended the pellet in 200λ DMSO. We did sonication to the sample and after another cell down, we took the supernatant for TECAN measurement. Also, we checked absorbance after 3 days incubation and before 3days incubation.
We used TECAN at absorbance 620nm to measure the quantity of indigo production
Results
We subtracted absorbance value of pure LB from value of samples and we set all samples to have same amount of cell using O.D value
Discussion
This data shows that the cell successfully produces indigo. We can use this gene as a reporter of our module. However, we only checked the increase of indigo. It may decrease after prolonged culture. We should do additional experiments to get the peak in the graph and optimize the production time of indigo.
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October 19th 2012
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October 20th 2012
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October 21st 2012
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October 22nd 2012
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October 23rd 2012
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October 24th 2012
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October 25th 2012
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October 26th 2012
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October 27th 2012
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October 28th 2012
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October 29th 2012
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October 30th 2012
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October 31st 2012
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