alf4- probably binds to the phosphate-binding site of the atpase , as the ki for inhibition of the ( na+ + k+ ) -atpase and of the plasmalemmal ( ca2+ + mg2+ ) -atpase is shifted in the presence of respectively 5 and 50 mm-pi to higher concentrations of naf .
C0001479
na
C0001473
atpase