Stimulation of Plasma Membrane Ca2+ Pump by Calbindin-D28k and Calmodulin is Additive in EGTA-Free Solutions

In enterocytes and erythrocytes a calmodulin-stimulated Ca2+-ATPase is the main Ca2+ efflux pathway. Previous studies have shown that in enterocytes this Ca2+-pumping ATPase could be stimulated by vitamin D-dependent Ca2+-binding protein, calbindin-D9k, in ethylene glycol-bis(β-aminoethyl ether)-N,N...

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