Enables heparin binding activity. Involved in several processes, including response to estradiol; response to peptide hormone; and response to vitamin D. Located in collagen-containing extracellular matrix; extracellular space; and vesicle. Biomarker of acute kidney tubular necrosis; kidney disease; nephroblastoma; and pyelonephritis. Human ortholog(s) of this gene implicated in prostate cancer. Orthologous to human BMP7 (bone morphogenetic protein 7). [provided by Alliance of Genome Resources, Apr 2022]