Predicted to enable DNA binding activity. Acts upstream of or within positive regulation of myoblast proliferation; positive regulation of nitrogen compound metabolic process; and regulation of skeletal muscle satellite cell proliferation. Located in nucleus. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; respiratory system; and sensory organ. Orthologous to human PAXBP1 (PAX3 and PAX7 binding protein 1). [provided by Alliance of Genome Resources, Apr 2022]