[Term] id: PR:000003386 name: collagen type VI alpha chain def: "A collagen alpha chain that is a translation product of the human COL6A1, COL6A2, or COL6A3 genes, 1:1 orthologs thereof, or a semi-ortholog thereof." [PRO:CNA, PRO:DAN, PMID:15788652] comment: Category=family. is_a: PR:000003262 ! collagen alpha chain