Anti-Collagen, Type IX, alpha 2 antibodies enable researchers to detect and measure the Collagen, Type IX, alpha 2 antigen in biological samples. This target is a reported synonym of the COL9A2 gene, which encodes collagen type IX alpha 2 chain. This protein is known to function in extracellular matrix organization and skeletal system development, among other biological roles. The human version of Collagen, Type IX, alpha 2 has a canonical amino acid length of 689 residues and a protein mass of 65.1 kilodaltons. It is reported to be localized in the extracellular matrix and is secreted of cells and notably expressed in the kidney, eye, and cartilage. Other names for this target antigen include DJ39G22.4, EDM2, and MED.