R10339 (7,8-dihydropterin-6-yl)methyl-diphosphate:4-(beta-D-ribofuranosyl)aniline-5'-phosphate 6-hydroxymethyl-7,8-dihydropterintransferase; 6-Hydroxymethyl-7,8-dihydropterin diphosphate + 4-(beta-D-Ribofuranosyl)aniline 5'-phosphate <=> N-[(7,8-Dihydropte • • •