Functions as a transcriptional repressor. May inhibit the activity of CTNNB1 in a TP53-dependent manner and thus regulate cell growth. May function in adipocyte differentiation, negatively regulating mitotic clonal expansion (PubMed:15644333, PubMed:22666460). Plays a role in cell-cell adhesion and epithelium development through its interaction with proteins of the beta-catenin family (By similarity). Interacts with CEBPB (PubMed:15644333). May interact with CEBPD (Probable). Interacts with EURL (PubMed:27404227). Interacts with MCRS1 (By similarity). Interacts with TCF7L2; competes with CTNNB1 (By similarity). Interacts with ANKRD26 (By similarity). Interacts with the beta-catenin family proteins ARVCF, CTNND1, CTNND2 AND PKP4 (By similarity). Expressed in white and brown adipose tissue. Belongs to the CCDC85 family.