the substrate kinetics for atp ( k ( m ( atp ) ) 1.1 millimolar in the presence of 2 millimolar mg ( 2+ ) ) , the competitive inhibition by adp ( k ( i ( adp ) ) 0.8 millimolar ) , the anion sensitivity ( stimulation by cl ( - ) , inhibition by no ( 3 ) ( - ) and so ( 4 ) ( 2- ) ) , the reversal of acidification by ca ( 2+ ) , the inhibition by diethylstilbestrol and dicyclohexylcarbodiimide , as well as the absence of any inhibition by azide , molybdate , and vanadate strongly suggest a tonoplast-type atpase driven proton pumping .
C0021966
i
C0003075
anion