... subcomplex, while the remaining four subunits (NdhH–K) form the connect-ing subcomplex, both of them homologous to the bac-terial subcomplexes. The theoretical molecular mass of the Ndh complex, ... transcription of the ndh genes is much higher in BS chloroplasts, andelevated amounts of the Ndh complex have been foundin these plastids [18]. The function of the Ndh complex is still a matter of debate. ... existence of the soluble subcomplex (which is the electroninput device in bacterial complex I) in the composition of the Ndh com-plex. Furthermore, there are contrasting reports regarding the subunitcomposition...