since a nh ( 4 ) ( + ) /ch ( 3 ) nh ( 3 ) ( + ) uniporter has been demonstrated in the plasmalemma of r. fluitans previously ( felle 1983 biochim biophys acta 602:181-195 ) , the concentration-dependent shifts of cytoplasmic ph are interpreted as results of two processes : first , acidification through deprotonation of the actively transported nh ( 4 ) ( + ) ;
C0007603
plasmalemma
C0010834
cytoplasmic