Difference between revisions of "Part:BBa K1017301"
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Cph8 is a chimeric light receptor. It is a fusion of the photoreceptor Cph1(pink) and the EnvZ histidine kinase. The light sensing unit is connected to transcription via the EnvZ-OmpR signaling pathway, phosphorylated OmpR acting as a transcription factor of PompC. Cph1 is only active when it binds the chromophore phycocyanobiline (PCB). Far red light(or darkness) activates the EnvZ kinase which results in the phosphorylation of OmpR and its activation as a transcription factor. On the other hand, red light deactivates the kinase and therefore the genes downstream can not be expressed. Take the image above as an example, in the dark, the phosphorylated OmpR will turn on PompC then lacZ gene is translated, signaling out black pigment. | Cph8 is a chimeric light receptor. It is a fusion of the photoreceptor Cph1(pink) and the EnvZ histidine kinase. The light sensing unit is connected to transcription via the EnvZ-OmpR signaling pathway, phosphorylated OmpR acting as a transcription factor of PompC. Cph1 is only active when it binds the chromophore phycocyanobiline (PCB). Far red light(or darkness) activates the EnvZ kinase which results in the phosphorylation of OmpR and its activation as a transcription factor. On the other hand, red light deactivates the kinase and therefore the genes downstream can not be expressed. Take the image above as an example, in the dark, the phosphorylated OmpR will turn on PompC then lacZ gene is translated, signaling out black pigment. | ||
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Revision as of 15:57, 21 September 2013
Cph8(cph1-envZ)
Cph8 is a chimeric light receptor. It is a fusion of the photoreceptor Cph1(pink) and the EnvZ histidine kinase. The light sensing unit is connected to transcription via the EnvZ-OmpR signaling pathway, phosphorylated OmpR acting as a transcription factor of PompC. Cph1 is only active when it binds the chromophore phycocyanobiline (PCB). Far red light(or darkness) activates the EnvZ kinase which results in the phosphorylation of OmpR and its activation as a transcription factor. On the other hand, red light deactivates the kinase and therefore the genes downstream can not be expressed. Take the image above as an example, in the dark, the phosphorylated OmpR will turn on PompC then lacZ gene is translated, signaling out black pigment.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21INCOMPATIBLE WITH RFC[21]Illegal XhoI site found at 364
- 23COMPATIBLE WITH RFC[23]
- 25COMPATIBLE WITH RFC[25]
- 1000COMPATIBLE WITH RFC[1000]