HMM Summary Page: TIGR01183

Functionnitrate ABC transporter, permease protein
Gene SymbolntrB
Trusted Cutoff209.05
Domain Trusted Cutoff209.05
Noise Cutoff168.75
Domain Noise Cutoff168.75
Isology Typeequivalog
HMM Length202
Mainrole CategoryTransport and binding proteins
Subrole CategoryAnions
Gene Ontology TermGO:0005887: integral to plasma membrane cellular_component
GO:0015414: nitrate transmembrane-transporting ATPase activity molecular_function
GO:0015706: nitrate transport biological_process
GO:0055052: ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing cellular_component
AuthorUjwal ML, Paulsen IT
Entry DateMar 4 2001 10:48PM
Last ModifiedFeb 14 2011 3:27PM
CommentThis model describes the nitrate transport permease in bacteria. This is gene product of ntrB. The nitrate transport permease is the integral membrane component of the nitrate transport system and belongs to the ATP-binding cassette (ABC) superfamily. At least in photosynthetic bacteria nitrate assimilation is aided by other proteins derived from the operon which among others include products of ntrA, ntrB, ntrC, ntrD, narB. Functionally ntrC and ntrD resemble the ATP binding components of the binding protein-dependent transport systems. Mutational studies have shown that ntrB and ntrC are mandatory for nitrate accumulation. Nitrate reductase is encoded by narB.