3.5.4.16 dihydroneopterin triphosphate synthase, FelE, folE, GCH, GCH-1, GCH1, GCHI, GCYH-IA, GCYH-IB, GTP 8-formylhydrolase, GTP CHase I, GTP cyclohydrolase, GTP cyclohydrolase 1, GTP cyclohydrolase I, GTP cyclohydrolase IA, GTP cyclohydrolase IB, GTP cyclohydrolase-1, GTP-CH, GTP-CH-I, GTP-CH1, GTP-cyclohydrolase 1, GTP-cyclohydrolase I, GTPCH, GTPCH I, GTPCH-1, GTPCH1, GTPCHI, guanosine 5'-triphosphate-cyclohydrolase I, guanosine triphosphate 8-deformylase, guanosine triphosphate cyclohydrolase, guanosine triphosphate cyclohydrolase 1, guanosine triphosphate cyclohydrolase I, guanosine-5'-triphosphate cyclohydrolase 1, hydrolase, guanosine triphosphate cyclo-, MptA, Punch, Punch protein