HMM Summary Page: TIGR02040

Functiontranscriptional regulator PpsR
Gene SymbolppsR
Trusted Cutoff275.40
Domain Trusted Cutoff275.40
Noise Cutoff149.05
Domain Noise Cutoff149.05
Isology Typeequivalog
HMM Length442
Mainrole CategoryEnergy metabolism
Subrole CategoryPhotosynthesis
Gene Ontology TermGO:0010109: regulation of photosynthesis biological_process
GO:0016564: transcription repressor activity molecular_function
AuthorSelengut J
Entry DateOct 28 2003 11:49AM
Last ModifiedFeb 14 2011 3:27PM
CommentThis HMM represents the transcriptional regulator PpsR which is strictly associated with photosynthetic proteobacteria and found in photosynthetic operons. PpsR has been reported to be a repressor [1]. These proteins contain a Helix-Turn_Helix motif of the "fis" type (PF02954).
ReferencesRN [1] RM PMID: 10735869 RT Domain structure, oligomeric state, and mutational analysis of PpsR, the Rhodobacter sphaeroides repressor of photosystem gene expression. RA Gomelsky M, Horne IM, Lee HJ, Pemberton JM, McEwan AG, Kaplan S. RL J Bacteriol. 2000 Apr;182(8):2253-61.