Purines, pyrimidines, nucleosides, and nucleotides

phosphoribosylglycinamide formyltransferase (RefSeq)

thymidylate synthase (RefSeq)

phosphoribosylaminoimidazole carboxylase catalytic subunit (RefSeq)

phosphoribosylaminoimidazole carboxylase ATPase subunit (RefSeq)

uracil phosphoribosyltransferase (RefSeq)

bifunctional GMP synthase/glutamine amidotransferase protein (RefSeq)

inositol-5-monophosphate dehydrogenase (RefSeq)

formyltetrahydrofolate deformylase (RefSeq)