Reaction catalyzed by 7,8-dihydropterin-6-yl-methyl-4-(beta-D-ribofuranosyl)aminobenzene 5'-phosphate synthase (2.5.1.105)

		+			=			+
	6-hydroxymethyl-7,8-dihydropterin diphosphate	+		1-(4-aminophenyl)-1-deoxy-D-ribitol	=		7,8-dihydropterin-6-methyl-1-(4-aminophenyl)-1-deoxy-D-ribitol	+		diphosphate