Predicted to enable several functions, including fibronectin binding activity; heparin binding activity; and laminin-1 binding activity. Involved in behavioral response to pain; regulation of tissue remodeling; and response to endoplasmic reticulum stress. Located in collagen-containing extracellular matrix; extracellular space; and sarcoplasmic reticulum. Is expressed in several structures, including brain; genitourinary system; gut; heart; and skeletal musculature. Orthologous to human THBS4 (thrombospondin 4). [provided by Alliance of Genome Resources, Apr 2022]