Protein Family Models

This family is the gamma subunit of the nitrate reductase enzyme, the gamma subunit is a b-type cytochrome that receives electrons from the quinone pool [1]. It then transfers these via the iron-sulfur clusters of the beta subunit to the molybdenum cofactor found in the alpha subunit [1]. The nitrate reductase enzyme, EC:1.7.99.4 catalyses the conversion of nitrite to nitrate via the reduction of an acceptor. The nitrate reductase enzyme is composed of three subunits [1]. Nitrate is the most widely used alternative electron acceptor after oxygen [1]. [1]. 9738886. Identification and characterization of the Staphylococcus carnosus nitrate reductase operon. Pantel I, Lindgren PE, Neubauer H, Gotz F;. Mol Gen Genet 1998;259:105-114. (from Pfam)

Date:

2024-10-16

respiratory nitrate reductase subunit gamma is part of the enzyme complex (composed of alpha, beta and gamma subunits) that allows the use of nitrate as an electron acceptor during anaerobic growth; the gamma chain is a membrane-embedded heme-iron unit resembling cytochrome b, which transfers electrons from quinones to the beta subunit

Date:

2023-03-04

Involved in anerobic respiration the gene product catalyzes the reaction (reduced acceptor + NO3- = Acceptor + nitrite). Another possible role_id for this gene product is in nitrogen fixation (Role_id:160).

Gene:

narI

Date:

2021-04-27