該基因編碼WWC蛋白質家族的一個成員，也包括WWC1（kibra）基因產物和WWC2基因產物。由該基因編碼的蛋白質包含c2結構域，已知該結構域介導相關wwc1基因產物中的同二聚體。
This gene encodes a member of the WWC family of proteins, which also includes the WWC1 (KIBRA) gene product and the WWC2 gene product. The protein encoded by this gene includes a C2 domain, which is known to mediate homodimerization in the related WWC1 gene product.