Reaction catalyzed by 7beta-hydroxysteroid dehydrogenase (NADP+) (1.1.1.201)

		+		NADP+	=			+		NADPH
	3alpha,7beta,12alpha-trihydroxy-5beta-cholanoic acid	+		NADP+	=		3alpha,12alpha-dihydroxy-7-keto-5beta-cholanoic acid	+		NADPH