Protein
NADH-quinone oxidoreductase subunit H
Organism
Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422)
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
MPDWLSALLITLLKAVLVALALLTAFAYMTLIERRLLGRIQLRPGPNRVGPMGLLQPLADAIKSIFKEDVTVTLADKLVYTLAPILAIGMALTAFGGIPAGPPGSLFGTDPWVYNLDAGILALLALTSMGVYGIFLGGWASGSKYPMLGSLRSSAQMISYELGMGLSVLGLLMLVGSTNFLDIVEWQAGPRGHGWLILFQVFAFALFMVSSFAEVNRTPFDLPEAEQELVAGYLTEYSSIKWALFQMAEYVNIMTASALMSTLFFGGYRGPTFLEPLIPGISSWPLVWLIAKIAFFMFLFIWVRATLPRLRYDQLMRLGWKLTLPLALVNTLVVAAVLAFVPAEGLFGIPRLWLLGAVSLLLLLILFAASDAVRGLWNSPALRNEEKRVPGRPLGGD