Protein
NADH-quinone oxidoreductase subunit H 2
Organism
Nitrosococcus oceani (strain ATCC 19707 / BCRC 17464 / NCIMB 11848 / C-107)
Function
NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be ubiquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient. This subunit may bind ubiquinone.
Similarity
Belongs to the complex I subunit 1 family.
Sequence
MFDFLPSSLQVTLPILFKIVAIVLPLILIVAWLTFAERKIIGYMQGRIGPNRVGPRGWLQPIADTVKLLLKEIIIPASANRILFLLAPVLAIAPALAVWAVIPFDAHLVLADINAALLYILAIGSMSVYGIILAGWASNSKYAFLGAMRSAAQVVSYEIAMGFALVGVLIAGGSLNLGEIVQAQEGGFWHWFWLPLFPLFLIYFISGVAETNRLPFDVAEGESEIVAGFHVEYSGMAFALFFLAEYIEMILVSTLAALMFLGGWLSPFQGTVLEAIFEWVPGIVWLLIKTAIFLFFYLWFRATFPRYRYDQIMRLGWKVFIPITIVWLLVVGGARVAQLGPWFT