Reaction catalyzed by alpha-mannosidase (3.2.1.24), mannosyl-oligosaccharide 1,2-alpha-mannosidase (3.2.1.113)

		+	4	H2O	=			+	4
	Man9GlcNAc2-[protein]	+		4 H2O	=		Man5GlcNAc2-[protein]	+		4 beta-D-mannopyranose