COL12A1（collagen type XII alpha 1 chain） encodes the alpha chain of type XII collagen, a member of the FACIT (fibril-associated collagens with interrupted triple helices) collagen family. Type XII collagen is a homotrimer found in association with type I collagen, an association that is thought to modify the interactions between collagen I fibrils and the surrounding matrix. Alternatively spliced transcript variants encoding different isoforms have been identified.蛋白別名為：Collagen alpha-1(XII) chain;基因ID為：1303；蛋白質ID:Q99715
