Functions as a transcriptional repressor. May inhibit the activity of CTNNB1 in a TP53-dependent manner and thus regulate cell growth (By similarity). May function in adipocyte differentiation, negatively regulating mitotic clonal expansion (By similarity). Plays a role in cell-cell adhesion and epithelium development through its interaction with proteins of the beta-catenin family (Probable). Morpholino knockdown of the protein results in neural tube closure defects and a disorganization of the neuroepithelium (PubMed:25009281). This developmental phenotype is associated with an alteration of cell-cell junctions (PubMed:25009281). Belongs to the CCDC85 family.