Plays a role in cell adhesion and cell migration. Forms a complex with CDH1 and CTNNB1; interacts directly with CTNNB1. Interacts with AP1M2. Interacts with isoform 2 of BSG/CD147. Mainly basolateral (PubMed:16707570). Localization is mediated by AP1M2 (PubMed:16707570). Expressed in uterus and pancreas (at protein level). Thr-237 and Ser-239 may be phosphorylated; however as this position is probably extracellular, the in vivo relevance is not proven.