COL9A2, Official Symbol COL9A2provided by HGNC Official Full Name collagen type IX alpha 2 chainprovided by HGNC Primary source HGNC:HGNC:2218 See related Ensembl:ENSG00000049089 MIM:120260; AllianceGenome:HGNC:2218 Gene type protein coding RefSeq status REVIEWED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as MED; EDM2; STL5; DJ39G22.4 Summary This gene encodes one of the three alpha chains of type IX collagen, the major collagen component of hyaline cartilage. Type IX collagen, a heterotrimeric molecule, is usually found in tissues containing type II collagen, a fibrillar collagen. This chain is unusual in that, unlike the other two type IX alpha chains, it contains a covalently attached glycosaminoglycan side chain. Mutations in this gene are associated with multiple epiphyseal dysplasia. [provided by RefSeq, Jul 2008] Expression Broad expression in prostate (RPKM 5.8), brain (RPKM 5.5) and 20 other tissues See more Orthologs mouse all