Protein
Cytochrome c nitrite reductase subunit NrfH
Organism
Desulfovibrio vulgaris (strain Hildenborough / ATCC 29579 / DSM 644 / NCIMB 8303)
Function
Electron donor subunit of the cytochrome c nitrite reductase holocomplex NrfHA. Acquires electrons from the menaquinone pool and mediates their transfer to the catalytic subunit NrfA in an anaerobic respiratory process of nitrite (PubMed:11004582, PubMed:17139260, PubMed:18597779). The other biological function of the NrfHA holocomplex is to detoxify nitrite (PubMed:15547266, PubMed:25534748). This function is essential for the survival of this organism as it enables it to overcome inhibition by nitrite, which is produced by other organisms living in the same environment (Probable).
Similarity
Belongs to the NapC/NirT/NrfH family.
Sequence
MSEEKSRNGPARLKLVLGGATLGVVALATVAFGMKYTDQRPFCTSCHIMNPVGVTHKLSGHANISCNDCHAPHNLLAKLPFKAIAGARDVYMNTLGHPGDLILAGMETKEVVNANCKACHTMTNVEVASMEAKKYCTDCHRNVQHMRMKPISTREVADE