[Term] id: PR:000003388 name: collagen type IV alpha chain def: "A collagen alpha chain that is a translation product of the human COL4A1, COL4A2, COL4A3, COL4A4, COL4A5, or COL4A6 genes, 1:1 orthologs thereof, or a semi-ortholog thereof." [PRO:CNA, PRO:DAN, PMID:15788652] comment: Category=family. synonym: "fam:COL4A[1-6]" EXACT PRO-short-label [PRO:DAN] is_a: PR:000003262 ! collagen alpha chain