Predicted to enable transcription coactivator binding activity. Involved in several processes, including negative regulation of cardiac muscle cell proliferation; negative regulation of hippo signaling; and positive regulation of cellular protein catabolic process. Located in nucleus. Is expressed in lung; submandibular gland primordium; tooth; and vibrissa. Orthologous to human VGLL4 (vestigial like family member 4). [provided by Alliance of Genome Resources, Apr 2022]