Part:BBa_K648029
OR, operating region for Lambda switch
The operating region for the Lambda switch that represses C1 and Cro bind to. This region contains promoters prm and pr facing in opposite directions. It also contains operating regions Or3, Or2 and Or1. In the lysogenic state, the C1 dimer is bound naturally bound to the Or1 repressing promotor pr and production of cro. Once RecA cleaves enough C1 dimer the system switches to the lytic state. The Cro produced at the pr promoter then binds to the Or3 site inhibiting the prm promoter. For a better description of the Lambda system read the book "A genetic switch" by Mark Ptashne. We used Or in creation of the lambda system, as part of our project to create a sensor for DNA damage in bacteria due to radiation.
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]
Functional Parameters: Austin_UTexas
Burden Imposed by this Part:
Burden is the percent reduction in the growth rate of E. coli cells transformed with a plasmid containing this BioBrick (± values are 95% confidence limits). This BioBrick did not exhibit a burden that was significantly greater than zero (i.e., it appears to have little to no impact on growth). Therefore, users can depend on this part to remain stable for many bacterial cell divisions and in large culture volumes. Refer to any one of the BBa_K3174002 - BBa_K3174007 pages for more information on the methods, an explanation of the sources of burden, and other conclusions from a large-scale measurement project conducted by the 2019 Austin_UTexas team.
This functional parameter was added by the 2020 Austin_UTexas team.
| n/a | OR, operating region for Lambda switch |