HMM Summary Page: TIGR02882

Functioncytochrome aa3 quinol oxidase, subunit I
Gene SymbolqoxB
Trusted Cutoff1015.50
Domain Trusted Cutoff1015.50
Noise Cutoff954.70
Domain Noise Cutoff954.70
Isology Typeequivalog
EC Number1.10.3.-
HMM Length643
Mainrole CategoryEnergy metabolism
Subrole CategoryElectron transport
AuthorSelengut J
Entry DateMar 9 2006 9:49AM
Last ModifiedFeb 14 2011 3:27PM
CommentThis family (QoxB) encodes subunit I of the aa3-type quinone oxidase, one of several bacterial terminal oxidases [1]. This complex couples oxidation of reduced quinones with the reduction of molecular oxygen to water and the pumping of protons to form a proton gradient utilized for ATP production. aa3-type oxidases contain two heme a cofactors as well as copper atoms in the active site.
ReferencesRN [1] RM PMID: 7575098 RT Properties of the menaquinol oxidase (Qox) and of qox deletion mutants of Bacillus subtilis. RA Lemma E, Simon J, Schagger H, Kroger A. RL Arch Microbiol. 1995 Jun;163(6):432-8.
Genome PropertyGenProp0620: cytochrome (quinone) oxidase, aa3 type, QoxABCD (HMM)