2.4.2.14 amidophosphoribosyltransferase 5-aminoimidazole ribonucleotide biosynthesis II - 6.3.1.21 phosphoribosylglycinamide formyltransferase 2 5-aminoimidazole ribonucleotide biosynthesis II - 6.3.3.1 phosphoribosylformylglycinamidine cyclo-ligase 5-aminoimidazole ribonucleotide biosynthesis II - 6.3.4.13 phosphoribosylamine-glycine ligase 5-aminoimidazole ribonucleotide biosynthesis II - 6.3.5.3 phosphoribosylformylglycinamidine synthase 5-aminoimidazole ribonucleotide biosynthesis II -