Reaction catalyzed by mannosylglucosyl-3-phosphoglycerate phosphatase (3.1.3.B8)

		+		H2O	=			+
	2-O-[2-O-(alpha-D-mannopyrarosyl)-alpha-D-glucopyranosyl]-3-phospho-D-glycerate	+		H2O	=		2-O-[2-O-(alpha-D-mannopyrarosyl)-alpha-D-glucopyranosyl]-D-glycerate	+		phosphate