the pi effluent profile coincides with the pattern of the pulse when it activates only the ca2+-independent atpase , it appears delayed when the pulse activates only extra pi production by the ( ca2+ + mg2+ ) -atpase , and it includes a rapid and a delayed component when both ca2+-independent and ca2+-dependent atpases are activated simultaneously by the pulse .
C0001473
atpase
C0001476
ca2