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. Author manuscript; available in PMC: 2009 May 11.
Published in final edited form as: J Biol Chem. 2007 Jun 26;282(35):25640–25648. doi: 10.1074/jbc.M701129200

FIGURE 2. Ca2+ dependence of the ATPase activity of PMCA4a (A), PMCA4b (B) and of the rate constant for activation by CaM (kact) (C) for PMCA4a and PMCA4b.

FIGURE 2

The ATPase activity was measured as described in Materials and Methods.