該基因編碼E3泛素連接酶CBL家族的一個成員。cbl蛋白通過泛素化和隨后的酪氨酸激酶下調在細胞信號傳導中發揮重要作用。該基因的表達可能僅限于上皮細胞，而且還觀察到該基因編碼多種亞型的選擇性剪接轉錄變體。
This gene encodes a member of the Cbl family of E3 ubiquitin ligases. Cbl proteins play important roles in cell signaling through the ubiquitination and subsequent downregulation of tyrosine kinases. Expression of this gene may be restricted to epithelial cells, and alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene.