Folic acid

GTP cyclohydrolase I (RefSeq)
dihydropteroate synthase (RefSeq)
dihydroneopterin aldolase (RefSeq)
7, 8-dihydro-6-hydroxymethylpterin-pyrophosphokinase (RefSeq)
folylpolyglutamate synthase (RefSeq)
dihydropteroate synthase (RefSeq)
PARA-aminobenzoate synthase component I and II (RefSeq)