HMM Summary Page: TIGR02959

FunctionRNA polymerase sigma factor, SigZ family
Gene SymbolsigZ
Trusted Cutoff168.65
Domain Trusted Cutoff168.65
Noise Cutoff150.85
Domain Noise Cutoff150.85
Isology Typehypoth_equivalog
HMM Length170
AuthorSelengut J
Entry DateJun 5 2006 2:51PM
Last ModifiedFeb 14 2011 3:27PM
CommentThis family of RNA polymerase sigma factors is a member of the Sigma-70 subfamily (TIGR02937). One of these is designated as SigZ in B. subtilis (Swiss_Prot: SIGZ_BACSU) [1]. Interestingly, this group has a very sporatic distribution, B. subtilis, for instance, being the only sequenced strain of Bacilli with a member. Dechloromonas aromatica RCB appears to have two of these sigma factors. A member appears on a plasmid found in Photobacterium profundum SS9 and Vibrio fischeri ES114 (where a second one is chromosomally encoded).
ReferencesRN [1] RM PMID: 9308178 RT Sequence of the Bacillus subtilis genome region in the vicinity of the lev operon reveals two new extracytoplasmic function RNA polymerase sigma factors SigV and SigZ. RA Sorokin A, Bolotin A, Purnelle B, Hilbert H, Lauber J, Dusterhoft A, Ehrlich SD. RL Microbiology. 1997 Sep;143 ( Pt 9):2939-43.