Enables cadherin binding activity; calcium ion binding activity; and protein homodimerization activity. Involved in several processes, including calcium-dependent cell-cell adhesion via plasma membrane cell adhesion molecules; cell-cell adhesion mediated by cadherin; and neuron development. Located in several cellular components, including axon; cell-cell junction; and dendrite. Is expressed in several structures, including mushroom body; neuron projection bundle; organism subdivision; synaptic neuropil domain; and synaptic neuropil layer. Used to study prostate cancer.