COL13A1 (Collagen Type XIII Alpha 1 Chain): COL13A1 encodes a transmembrane collagen that plays a role in the structure and function of connective tissues. It facilitates cell adhesion, preserves muscle integrity, and stabilizes the neuromuscular junction. Alterations in COL13A1 activity are associated with muscle disorders and are under investigation for their role in connective tissue diseases and cancer metastasis.