Enables fibronectin binding activity; identical protein binding activity; and protein kinase C binding activity. Involved in positive regulation of cellular component biogenesis; positive regulation of protein kinase activity; and ureteric bud development. Located in several cellular components, including costamere; focal adhesion; and membrane raft. Used to study bacterial infectious disease. Orthologous to human SDC4 (syndecan 4). [provided by Alliance of Genome Resources, Apr 2022]