Enables identical protein binding activity and phosphatidylinositol 3-kinase regulatory subunit binding activity. Involved in regulation of inflammatory response; regulation of signal transduction; and toll-like receptor signaling pathway. Located in cytosol and plasma membrane. Orthologous to human PIK3AP1 (phosphoinositide-3-kinase adaptor protein 1). [provided by Alliance of Genome Resources, Apr 2022]