Predicted to be an extracellular matrix structural constituent. Predicted to be involved in extracellular matrix organization. Predicted to be part of collagen type IX trimer. Predicted to be active in extracellular matrix and extracellular space. Human ortholog(s) of this gene implicated in Stickler syndrome; multiple epiphyseal dysplasia 2; and osteochondrodysplasia. Orthologous to human COL9A2 (collagen type IX alpha 2 chain). [provided by Alliance of Genome Resources, Apr 2022]