該基因編碼含有鈣粘蛋白結構域的跨膜蛋白原鈣粘蛋白家族成員和鈣粘蛋白超家族這些蛋白質在鈣的存在下介導神經組織中的細胞粘附。編碼蛋白可能參與神經元突觸連接處的信號傳導。與其他原鈣粘蛋白基因一樣，該基因有一個顯著的大外顯子，編碼多個鈣粘蛋白結構域和跨膜區。另外，已經發現該基因編碼不同亞型的剪接轉錄變體。
This gene encodes a member of the protocadherin family, and cadherin superfamily, of transmembrane proteins containing cadherin domains. These proteins mediate cell adhesion in neural tissues in the presence of calcium. The encoded protein may be involved in signaling at neuronal synaptic junctions. Sharing a characteristic with other protocadherin genes, this gene has a notably large exon that encodes multiple cadherin domains and a transmembrane region. Alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.