Enables fibrinogen binding activity and fibronectin binding activity. Involved in positive regulation of cold-induced thermogenesis. Acts upstream of or within platelet formation. Located in microfibril. Is expressed in several structures, including central nervous system; embryo mesenchyme; extraembryonic component; genitourinary system; and lung. Orthologous to human MFAP2 (microfibril associated protein 2). [provided by Alliance of Genome Resources, Apr 2022]