Composite
cI857

Part:BBa_K200011

Designed by: Royah Vaezi, Kun Xue   Group: iGEM09_Imperial College London   (2009-08-31)
Revision as of 19:56, 31 August 2009 by Kun (Talk | contribs)

The temperature sensitive lamda cI repressor protein has a cI857 mutation that results in denaturation of the repressor when the temperature is raised from 30 to 42°C, thereby allowing lambda promoter expression. cI1

The repressor normally negatively regulates the expression of genes from the bacteriophage lambda pL and pR promoters. This repressive action is strongest at 30°C. cI2

However, when the temperature is raised, typically to 42°C, the functionality of the protein is lost and the cI repressor is no longer able to bind to the operators on its promoter. Therefore, lambda promoter expression increases.


References

<biblio> cI1 pmid=5274442 cI2 pmid=10235623 </biblio>

[edit]
Categories
//cds/transcriptionalregulator/repressor
//chassis/prokaryote/ecoli
Parameters
None