Reaction catalyzed by 3beta-hydroxy-DELTA5-steroid dehydrogenase (1.1.1.145)

		+		NADPH	=			+		NADP+
	11beta,17alpha,21-trihydroxy-4-pregnen-3,20-dione	+		NADPH	=		3beta,11beta,17alpha,21-tetrahydroxy-4-pregnen-20-one	+		NADP+