Enzymatic formation of the pteridine moiety of folic acid from guanine compounds.
D005492:Folic Acid / Q000378:metabolism*; D006147:Guanine; D006801:Humans; D009705:Nucleosides / Q000378:metabolism*; D009711:Nucleotides / Q000378:metabolism*; D011621:Pteridines; D011622:Pterins / Q000378:metabolism*
D009705:Nucleosides; D009711:Nucleotides; D011621:Pteridines; D011622:Pterins; D006147:Guanine; D005492:Folic Acid
FOLIC ACID/metabolism; NUCLEOSIDES AND NUCLEOTIDES/metabolism; PTERINS/metabolism