Protein Family Models

PAS domains are involved in many signalling proteins where they are used as a signal sensor domain [1]. PAS domains appear in archaea, bacteria and eukaryotes. Several PAS-domain proteins are known to detect their signal by way of an associated cofactor. Heme, flavin, and a 4-hydroxycinnamyl chromophore are used in different proteins. This domain recognises oxygen and CO (Matilla et al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043). [1]. 10357859. PAS domains: internal sensors of oxygen, redox potential, and light. Taylor BL, Zhulin IB;. Microbiol Mol Biol Rev. 1999;63:479-506. (from Pfam)

Date:

2024-10-16

Date:

2024-08-14

This family is only found in bacteria. Family members include PhoR. A member of the two-component regulatory system PhoR/PhoB involved in the phosphate regulon genes expression. PhoR is the bifunctional histidine autokinase/phospho-PhoB phosphatase that donates a phosphoryl group to PhoB when environmental Pi is limiting and removes the phosphoryl group from phosphorylated PhoB (PhoB-P) when environmental Pi is abundant [1]. [1]. 24563032. The PhoU protein from Escherichia coli interacts with PhoR, PstB, and metals to form a phosphate-signaling complex at the membrane. Gardner SG, Johns KD, Tanner R, McCleary WR;. J Bacteriol. 2014;196:1741-1752. (from Pfam)

Date:

2024-10-16

This family represents the structurally related ATPase domains of histidine kinase, DNA gyrase B and HSP90. [1]. 18361456. Crystal structure of a novel non-Pfam protein AF1514 from Archeoglobus fulgidus DSM 4304 solved by S-SAD using a Cr X-ray source. Li Y, Bahti P, Shaw N, Song G, Chen S, Zhang X, Zhang M, Cheng C, Yin J, Zhu JY, Zhang H, Che D, Xu H, Abbas A, Wang BC, Liu ZJ;. Proteins 2008;71:2109-13. (from Pfam)

Date:

2024-10-16

Dimerisation and phospho-acceptor domain of histidine kinases. [1]. 9989504. Structure of CheA, a signal-transducing histidine kinase. Bilwes AM, Alex LA, Crane BR, Simon MI;. Cell 1999;96:131-141. [2]. 18361456. Crystal structure of a novel non-Pfam protein AF1514 from Archeoglobus fulgidus DSM 4304 solved by S-SAD using a Cr X-ray source. Li Y, Bahti P, Shaw N, Song G, Chen S, Zhang X, Zhang M, Cheng C, Yin J, Zhu JY, Zhang H, Che D, Xu H, Abbas A, Wang BC, Liu ZJ;. Proteins 2008;71:2109-13. (from Pfam)

Date:

2024-10-16

Members of this protein family are the regulatory histidine kinase PhoR associated with the phosphate ABC transporter in most Proteobacteria. Related proteins from Gram-positive organisms are not included in this model. The phoR gene usually is adjacent to the response regulator phoB gene (TIGR02154).

Gene:

phoR

Date:

2024-02-27