Reaction catalyzed by dolichyl-phosphate beta-D-mannosyltransferase (2.4.1.83)

		+		C80 alpha-dihydropolyprenyl phosphate	=			+		C80 alpha-dihydropolyprenyl D-mannosyl phosphate
	GDPmannose	+		C80 alpha-dihydropolyprenyl phosphate	=		GDP	+		C80 alpha-dihydropolyprenyl D-mannosyl phosphate