Part:BBa_K3198004
Blue light repressible promoter with spacer addition
Team iGEM 18 NUS Singapore-A submitted BBa_K2819103 which is a Blue light-repressible system with RFP reporter attached with YbaQ degradation tag.
This part contains a promoter that can be repressed by blue light (450nm). This promoter makes use of a blue light dependent DNA-binding protein, EL222. Irradiation by blue light of wavelength 450nm exposes the hitherto sequestered HTH, facilitating dimerization of EL222 and subsequent DNA binding. The repression is achieved by placing the DNA binding site of EL222 between the -35 and -10 hexamers of the consensus promoter in E. coli, creating the blue light repressible promoter PBLrep. As a result, EL222 acts as a repressor, blocking the binding of RNA polymerase and repress gene expression in the presence of blue light. In the dark, RNA polymerase can now bind, and gene expression takes place.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21COMPATIBLE WITH RFC[21]
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]
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