Aliases for COL9A1 Gene
External Ids for COL9A1 Gene
Previous GeneCards Identifiers for COL9A1 Gene
This gene encodes one of the three alpha chains of type IX collagen, which is a minor (5-20%) collagen component of hyaline cartilage. Type IX collagen is usually found in tissues containing type II collagen, a fibrillar collagen. Studies in knockout mice have shown that synthesis of the alpha 1 chain is essential for assembly of type IX collagen molecules, a heterotrimeric molecule, and that lack of type IX collagen is associated with early onset osteoarthritis. Mutations in this gene are associated with osteoarthritis in humans, with multiple epiphyseal dysplasia, 6, a form of chondrodysplasia, and with Stickler syndrome, a disease characterized by ophthalmic, orofacial, articular, and auditory defects. Two transcript variants that encode different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]
GeneCards Summary for COL9A1 Gene
COL9A1 (Collagen Type IX Alpha 1 Chain) is a Protein Coding gene. Diseases associated with COL9A1 include Epiphyseal Dysplasia, Multiple, 6 and Stickler Syndrome, Type Iv. Among its related pathways are Collagen chain trimerization and Phospholipase-C Pathway. GO annotations related to this gene include extracellular matrix structural constituent conferring tensile strength. An important paralog of this gene is COL22A1.
UniProtKB/Swiss-Prot for COL9A1 Gene
Structural component of hyaline cartilage and vitreous of the eye.