sulphate-limited cells lacked the proton-translocating oxidoreduction segment of the electron-transport chain between nadh and the cytochromes , and particles prepared from these cells lacked the energy-dependent reduction of nad+ by succinate , dl-alpha-glycerophosphate or d-lactate , suggesting the loss of site-i phosphorylation .
C0030012
oxidoreduction
C0010798
cytochromes