ID 3.1.3.47 DE [hydroxymethylglutaryl-CoA reductase (NADPH)]-phosphatase. AN reductase phosphatase. CA [hydroxymethylglutaryl-CoA reductase (NADPH)] phosphate + H2O = CA [hydroxymethylglutaryl-CoA reductase (NADPH)] + phosphate. CC -!- Acts on the product of the reaction catalyzed by EC 2.7.11.31, CC simultaneously dephosphorylating and activating EC 1.1.1.34. //