Protein
NADH-quinone oxidoreductase subunit K 2
Organism
Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL 8165 / MA-4680)
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 a menaquinone. 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.
Similarity
Belongs to the complex I subunit 4L family.
Sequence
MHLAYPAVLSALLFSTGLYGVLARRNAILVLMSVELMLNAVNLNLVAFDVWLSKTARDTLHSGQALTLFTIAIAAAEIGIGLAIVLAVYRNRGTSDIDKLRDTAEGPEPDGPGTDGSAPTAAEKAEATA