[Term] id: PR:000040290 name: GTP cyclohydrolase 1 isoform 1 def: "A GTP cyclohydrolase 1 that is a translation product of some mRNA whose exon structure and start site selection renders it capable of giving rise to a protein with the amino acid sequence represented by UniProtKB:Q05915-1 or a 1:1 ortholog thereof." [PRO:DNx] comment: Category=sequence. synonym: "GCH1/iso:1" EXACT PRO-short-label [PRO:DNx] property_value: has_archetype PR:Q05915-1 is_a: PR:000007893 ! GTP cyclohydrolase 1