the stoichiometry of calcium binding to specific sites ( i.e. , those producing enzyme activation ) was found to be 8-10 nmol/mg protein in native sarcoplasmic reticulum vesicles , and 13.9-15.4 nmol/mg of atpase purified by non-ionic detergent solubilization and anion exchange chromatography .
C0022023
ionic
C0003075
anion