on the other hand , mg2+ - atp decreased the apparent affinity of the enzyme for k+ at the alpha-sites , in terms of ( i ) the kd for k+ measured by k+-accelerated inactivation of the enzyme by f- , and ( ii ) the concentration of k+ for half-maximal activation of the k+-dependent phosphatase reaction ( which reflects the terminal hydrolytic steps of the overall atpase reaction ) .
C0020291
hydrolytic
C0001473
atpase