Enables fibronectin binding activity and vitamin D binding activity. An extracellular matrix structural constituent. Predicted to be involved in negative regulation of apoptotic process. Predicted to act upstream of or within several processes, including animal organ development; chondrocyte proliferation; and vasculature development. Located in collagen-containing extracellular matrix. Human ortholog(s) of this gene implicated in carpal tunnel syndrome; multiple epiphyseal dysplasia 1; osteochondrodysplasia; and pseudoachondroplasia. Orthologous to human COMP (cartilage oligomeric matrix protein). [provided by Alliance of Genome Resources, Apr 2022]