NAD(P)H-quinone oxidoreductase chain 4 2 NDH-1, chain 4 2 NU4C2_THEEB ndhD2 NAD(P)H dehydrogenase I, chain 4 2 MNVQFPWLTVLTLLPLVAAFFIPVLPDREGKTVRWYALAIALLEFGLSAMVFWRHYDAQSAQFQMVETVPWLPQIGLNWSLAVDGLAVPLILLTGLVNTLAIFAAWQVKQKPRLFYFLMLALYSAQIGVFAAQDLILFFLIWELELVPVYLLISIWGGAQRQYAATKFILYTAVGSLFILIAGLGMAFYGGDFSLNMAALGLKNYPLALELLAYAGFLIAFGVKLPIFPLHTWLPDAHGEASAPVSMVLAGVLLKMGGYGLIRFNLQMLPDAHIYFAPVLIALGVVNIIYGALTAFGQENLKRRLAYSSISHMGFVLLGIGALNGIGLNGAMLQMLSHGLIAAVLFFLAGVTYDRTHTLAMEKMSGIAQSMPKTFALFTASSMASLALPGMSGFVSELTVFLGLTNSDAYSTTFKVGVIFLAAVGVIITPVYLLSMVRRVFTGKQAGDMFDKLLLDINPRETFIALSLLVPIIAVGMYPKVATQTYDVTTTAIARHVHGALPAVAQHHLPLYAQLTQSAPRLFRETTVADNSL 533 tlr1819 NDH-1 shuttles electrons from NAD(P)H, 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 plastoquinone. 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 (By similarity).