Enables heparin binding activity. Acts upstream of or within extracellular matrix organization. Located in extracellular matrix. Is expressed in several structures, including alimentary system; cardiovascular system; metanephros; pituitary gland; and respiratory system. Orthologous to human CRISPLD2 (cysteine rich secretory protein LCCL domain containing 2). [provided by Alliance of Genome Resources, Apr 2022]