Types | DnaRegion
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Roles | Device
engineered_region
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Sequences | BBa_K145230_sequence (Version 1)
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Description
A hybrid promoter controls the production of LuxR and ccdB. The promoter is activated by HSL-LuxR complex and repressed by P22 c2. The LuxR coding region is preceded by a strong RBS and followed by a bad terminator (60% efficiency). This means there is read through into the ccdB coding region which can be translated from a very weak RBS.
If the P22 c2 repressor is absent, there should be a strong enough LuxR background to allow autoactivation if HSL is added. The amound of ccdB should be sublethal as long as there is no significant activation.
Notes
The ratio of fully activated transcription to background transcription is the sole determinant of the ratio of ccdB produced in the activated state to the background state. Modeling has shown that this should be ok.
Source
other parts