n-cyclohexyl-n'- ( 4-dimethylamino-1-naphthyl ) carbodiimide ( ncd-4 ) labels ( ca2+ + mg2+ ) -atpase at ca2+-protectable sites , believed to be at or near the two ca2+ binding sites on the atpase , and at nonspecific sites .
C0001476
atpase
C0001473
atpase