Cadherins are calcium-dependent cell adhesion proteins. They preferentially interact with themselves in a homophilic manner in connecting cells; cadherins may thus contribute to the sorting of heterogeneous cell types. Interacts with CDCP1 and CTNNB1. Expression is high in both fetal and newborn testis but minimal in testis of 7-day-old animals. Not detected in testis of 21-day-old or adult. Three calcium ions are usually bound at the interface of each cadherin domain and rigidify the connections, imparting a strong curvature to the full-length ectodomain.