PhyR is a signal transduction response regulator found in Alphaproteobacteria with a C-terminal receiver domain (Pfam:PF00072) and extracytoplasmic function (ECF) sigma factor-like domain at the N-terminal which is represented in this entry [1-3]. Ph ...
PhyR is a signal transduction response regulator found in Alphaproteobacteria with a C-terminal receiver domain (Pfam:PF00072) and extracytoplasmic function (ECF) sigma factor-like domain at the N-terminal which is represented in this entry [1-3]. PhyR is the regulator of the two-component signal transduction system which controls transcription in response to general stress.
This is the N-terminal domain of response regulator PhyR and related proteins. It consists of three alpha-helices and together with sigma4 constitutes the PhyR receiver domain. This domain was shown to bind to anti-sigma factor NepR [1].
The general stress response sigma factor in alphaproteobacteria, sigma EcfG is inactivated by the anti-sigma factor NepR, which is itself regulated by the response regulator PhyR. NepR forms two helices that extend over the surface of the PhyR subdom ...
The general stress response sigma factor in alphaproteobacteria, sigma EcfG is inactivated by the anti-sigma factor NepR, which is itself regulated by the response regulator PhyR. NepR forms two helices that extend over the surface of the PhyR subdomains. Homology modeling and comparative analysis of NepR, PhyR and sigmaEcfG mutants indicate that NepR contacts both proteins with the same determinants, showing sigma factor mimicry at the atomic level. This entry represents NepR domains found in alphaproteobacteria [1].
