Figure 7

ESA activates Ser/Thr phosphatase calcineurin. (a) Enzymatic activity of calcineurin was measured with or without calmodulin. ESA augmented calcineurin activity regardless of calmodulin. (b) Okadaic acid, a phosphatase inhibitor, significantly reduced ESA-mediated apoptosis. Data were obtained from two independent experiments in triplicates. Values are the means±S.D. *P<0.05 (n=6).