Enables collagen V binding activity. Involved in several processes, including animal organ regeneration; embryo implantation; and positive regulation of endothelial cell proliferation. Located in collagen-containing extracellular matrix. Biomarker of hypertension. Human ortholog(s) of this gene implicated in Schwartz-Jampel syndrome 1; Silverman-Handmaker type dyssegmental dysplasia; and osteochondrodysplasia. Orthologous to human HSPG2 (heparan sulfate proteoglycan 2). [provided by Alliance of Genome Resources, Apr 2022]