Predicted to be an extracellular matrix structural constituent. Predicted to be involved in extracellular matrix organization. Located in collagen-containing extracellular matrix. Is expressed in several structures, including cap mesenchyme; central nervous system; limb mesenchyme; sensory organ; and skeleton. 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]