this enzyme had properties similar to those of plasma-membrane ca2+-atpases from other organs : its splitting of atp was dependent on both ca2+ and mg2+ , it bound in a ca2+-dependent fashion to calmodulin-sepharose and it cross-reacted with specific antibodies raised against human erythrocyte-membrane ca2+-atpase .
C0300252
plasma-membrane ca2
C0001476
ca2