NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain and possibly in a chloroplast respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be plastoquinone. Couples the redox reaction to proton translocation, and thus conserves the redox energy in a proton gradient. a plastoquinone + (n+1) H(+)(in) + NADH = a plastoquinol + n H(+)(out) + NAD(+) a plastoquinone + (n+1) H(+)(in) + NADPH = a plastoquinol + n H(+)(out) + NADP(+) Part of the chloroplast NDH complex, composed of a mixture of chloroplast and nucleus encoded subunits (PubMed:21785130). Component of the electron donor-binding subcomplex, at least composed of NDHS, NDHT and NDHU (PubMed:21505067, PubMed:24225949). Malfunction of the NDH complex.