Difference between revisions of "Part:BBa S03749"
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| − | + | As the recombineering, testing of riboregulators, and titering processes took place concurrently, we needed to find a simpler way to regulate viral protein concentrations in the cells. To this end, E. coli strains have been constructed that contain a low-copy plasmid construct where one of three key developmental viral genes - coding for the cro, N, or Q proteins - is regulated by a tetracycline-dependent promoter. A constitutive promoter produces a steady stream of tetracycline repressor (tetR), which substitutes for the cis repressor in repressing protein levels. The addition of anhydrotetracycline (aTc, acting as the trans activator) inactivates the tetracycline repressor and leads to the production of the respective viral protein in the E. coli cells. This allows us to control the concentration of viral protein produced in the cells by adding varying amounts of aTc to the bacterial growth media. | |
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Revision as of 04:46, 27 October 2007
tet-regulated cro (Strong tetR promoter)
As the recombineering, testing of riboregulators, and titering processes took place concurrently, we needed to find a simpler way to regulate viral protein concentrations in the cells. To this end, E. coli strains have been constructed that contain a low-copy plasmid construct where one of three key developmental viral genes - coding for the cro, N, or Q proteins - is regulated by a tetracycline-dependent promoter. A constitutive promoter produces a steady stream of tetracycline repressor (tetR), which substitutes for the cis repressor in repressing protein levels. The addition of anhydrotetracycline (aTc, acting as the trans activator) inactivates the tetracycline repressor and leads to the production of the respective viral protein in the E. coli cells. This allows us to control the concentration of viral protein produced in the cells by adding varying amounts of aTc to the bacterial growth media.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12INCOMPATIBLE WITH RFC[12]Illegal NheI site found at 464
Illegal NheI site found at 487 - 21INCOMPATIBLE WITH RFC[21]Illegal BglII site found at 174
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]