Part:BBa_K4286099
Classical oscillator composed of three genes encoding repressor protein
2022 SZU-China has designed a timed suicide switch mediated by a classical synthetic gene oscillator. In the negative feedback loop, the oscillator is composed of three genes encoding repressor protein -- TetR from the Tn10 transposon, cI from bacteriophage lambda, and LacI from the lactose operon -- each repressor protein is attached to an LVA degradation tag located at the carboxy terminus. The concentration of each kind of repressor protein changed cyclically: lacI inhibited the expression of tetR, tetR inhibited the expression of cI, and cI inhibited lacI expression.
Usage and Biology
Gene oscillation is a gene regulation mechanism, and the amplitude and period of oscillation reflect the gene expression. Its principle is that three gene modules whose encoded repressors inhibit each other are connected in series to form negative feedback, and the periodic change of the content of repressor is realized by the inhibition and deinhibition of gene modules. The oscillator contains three repressor proteins: TetR from the Tn10 transposon, λ cI from bacteriophage λ, and LacI from the lactose operon. Each repressor carries an LVA degradation tag at the C-terminus. The oscillator device is encoded on a low copy plasmid pSB3C5.
Assembly
modeling
Sequencing
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21INCOMPATIBLE WITH RFC[21]Illegal BglII site found at 2188
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]
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