Difference between revisions of "Part:BBa K861060:Experience"
| Line 12: | Line 12: | ||
<p align="justify"> Fatty acid Concentration gradient: 0.025, 0.05, 0.1, 0.25, 0.5, 1, 1.5 mM</p> | <p align="justify"> Fatty acid Concentration gradient: 0.025, 0.05, 0.1, 0.25, 0.5, 1, 1.5 mM</p> | ||
| − | <p><img src="https://static.igem.org/mediawiki/parts/ | + | <p><img src="https://static.igem.org/mediawiki/parts/0/00/PfadR.png" width="500" height="350" hspace="2" vspace="1" border="2" align="top" /></p> |
<p><i> PfadR and BBa_J23110 promoter strength at different glucose and fatty acids concentration</i></p> | <p><i> PfadR and BBa_J23110 promoter strength at different glucose and fatty acids concentration</i></p> | ||
<p align="justify"> As can be shown from the results, the promoter shows about 3 times induction from glucose to 1.5umol/L fatty acids medium and the fluorescence of PfadR is about one sixth of <a href="https://parts.igem.org/wiki/index.php?title=Part:BBa_J23110">BBa_J23110</a>. This may be result from the tandem FadR binding site has made it more difficult for Polymerase to start gene transcription. Also, in medium that use glucose as sole carbon source, PfadR seems to be leaky. However, since our bacteria is wild type <i>E.coli</i>, Fab genes was not mutated, meaning that bacteria can synthesis fatty acids. Therefore, there may be a basal level fatty acids concentration inside the cell, making the transcription not being totally repressed. </p> | <p align="justify"> As can be shown from the results, the promoter shows about 3 times induction from glucose to 1.5umol/L fatty acids medium and the fluorescence of PfadR is about one sixth of <a href="https://parts.igem.org/wiki/index.php?title=Part:BBa_J23110">BBa_J23110</a>. This may be result from the tandem FadR binding site has made it more difficult for Polymerase to start gene transcription. Also, in medium that use glucose as sole carbon source, PfadR seems to be leaky. However, since our bacteria is wild type <i>E.coli</i>, Fab genes was not mutated, meaning that bacteria can synthesis fatty acids. Therefore, there may be a basal level fatty acids concentration inside the cell, making the transcription not being totally repressed. </p> | ||
Revision as of 03:40, 27 September 2012
This experience page is provided so that any user may enter their experience using this part.
Please enter
how you used this part and how it worked out.
Applications of BBa_K861060
Result
Normalized using Fluorescence/0D600
Blue: Constitutive promoter J23110
Red: PfadR
Glucose Concentration gradient: 0.5, 1, 5, 10 mM
Fatty acid Concentration gradient: 0.025, 0.05, 0.1, 0.25, 0.5, 1, 1.5 mM
PfadR and BBa_J23110 promoter strength at different glucose and fatty acids concentration
As can be shown from the results, the promoter shows about 3 times induction from glucose to 1.5umol/L fatty acids medium and the fluorescence of PfadR is about one sixth of BBa_J23110. This may be result from the tandem FadR binding site has made it more difficult for Polymerase to start gene transcription. Also, in medium that use glucose as sole carbon source, PfadR seems to be leaky. However, since our bacteria is wild type E.coli, Fab genes was not mutated, meaning that bacteria can synthesis fatty acids. Therefore, there may be a basal level fatty acids concentration inside the cell, making the transcription not being totally repressed.
It should also be noticed that from fatty acids concentration 0.025umol/L to 1.5umol/L, the induction is not very obvious. F0.25, 0.5 and 1 seemed to have similar fluorescence strength. The promoter is not sensitive enough. For more details, please visit our wiki.
User Reviews
UNIQ2e39ce3f005e0ac0-partinfo-00000001-QINU UNIQ2e39ce3f005e0ac0-partinfo-00000002-QINU