該基因編碼一種E3泛素蛋白連接酶，維持調控細胞周期進入有絲分裂的前相檢查點，因此可能在細胞周期進展和腫瘤發生中起關鍵作用編碼的蛋白質具有一個N末端叉頭相關結構域、一個中央無名指結構域和一個富含半胱氨酸的C末端區域。已經描述了編碼不同蛋白質亞型的選擇性剪接轉錄變體[由RefSeq提供，2014年3月]
This gene encodes an E3 ubiquitin-protein ligase required for the maintenance of the antephase checkpoint that regulates cell cycle entry into mitosis and, therefore, may play a key role in cell cycle progression and tumorigenesis. The encoded protein has an N-terminal forkhead-associated domain, a central RING-finger domain, and a cysteine-rich C-terminal region. Alternatively spliced transcript variants that encode different protein isoforms have been described. [provided by RefSeq, Mar 2014]