the ca2+-sensitive atpase ( adenosine triphosphatase ) of human erythrocyte membranes is activated , not only by ca2+ ions , but also by a series of other bivalent metal ions including sr2+ , ba2+ , mn2+ , ni2+ , co2+ , cd2+ , cu2+ , zn2+ and pb2+ .
C0001476
ca2
C0001473
adenosine triphosphatase