Enables calcium ion binding activity and heparin binding activity. Acts upstream of or within extracellular matrix organization and positive regulation of cell-substrate adhesion. Located in basement membrane and interstitial matrix. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; impulse conducting system; and skin. Orthologous to human SMOC2 (SPARC related modular calcium binding 2). [provided by Alliance of Genome Resources, Apr 2022]