Enables transcription coregulator activity. Involved in negative regulation of B cell receptor signaling pathway and regulation of cell adhesion mediated by integrin. Located in focal adhesion; nucleus; and podosome. Is expressed in bladder; epithelium of pelvic urethra of female; ovary; thymus medullary core; and ureter. Orthologous to human LPXN (leupaxin). [provided by Alliance of Genome Resources, Apr 2022]