Protein phosphatase 2C (PP2C) is a family of serine/threonine specific protein phosphatases. PP2C is a 42 kDa monomeric enzyme with broad substrate specificity and its activity is depended upon divalent cations (e.g. magnesium) (1). In mammals, three members of PP2C family are known; PP2C -alpha, -beta, and -gamma. PP2C