Enables enzyme binding activity; leucine zipper domain binding activity; and transcription corepressor binding activity. Involved in several processes, including cellular response to growth factor stimulus; cellular response to prolactin; and cellular response to wortmannin. Located in nuclear speck and perinuclear region of cytoplasm. Part of protein-DNA complex. Human ortholog(s) of this gene implicated in osteosarcoma. Orthologous to human CDC5L (cell division cycle 5 like). [provided by Alliance of Genome Resources, Apr 2022]