該基因編碼一個蛋白質結構域，該結構域與肽酶家族C19（也稱為泛素羧基末端水解酶家族2）相關聯家族成員作為脫雙歧酶，識別和水解泛素c端甘氨酸的肽鍵。肽酶家族c19中的酶參與了多泛素前體和泛素化蛋白的加工。交替轉錄剪接變體，編碼不同的亞型，已經被描述出來。
This gene encodes a protein containing domains that associate it with the peptidase family C19, also known as family 2 of ubiquitin carboxyl-terminal hydrolases. Family members function as deubiquitinating enzymes, recognizing and hydrolyzing the peptide bond at the C-terminal glycine of ubiquitin. Enzymes in peptidase family C19 are involved in the processing of poly-ubiquitin precursors as well as that of ubiquitinated proteins. Alternate transcriptional splice variants, encoding different isoforms, have been characterized.