| Gene Symbol | XIAP |
|---|---|
| Entrez Gene | 331 |
| Alt Symbol | API3, BIRC4, IAP-3, ILP1, MIHA, XLP2, hIAP-3, hIAP3 |
| Species | Human |
| Gene Type | protein-coding |
| Description | X-linked inhibitor of apoptosis, E3 ubiquitin protein ligase |
| Other Description | E3 ubiquitin-protein ligase XIAP|IAP-like protein|X-linked IAP|baculoviral IAP repeat-containing protein 4|inhibitor of apoptosis protein 3 |
| Swissprots | D3DTF2 P98170 Q9NQ14 |
| Accessions | AAW62257 CAW32364 CAW32374 EAX11858 EAX11859 EAX11860 EAX11861 P98170 AK130423 AK309704 AK313883 BAG36609 BC030771 BC032729 AAH32729 BQ423165 DA316362 DQ890857 ABM81783 DQ894012 ABM84938 H09548 U32974 AAC50518 XM_006724754 XP_006724817 XM_011531329 XP_011529631 NM_001167 NP_001158 NM_001204401 NP_001191330 NR_037916 |
| Function | Multi-functional protein which regulates not only caspases and apoptosis, but also modulates inflammatory signaling and immunity, copper homeostasis, mitogenic kinase signaling, cell proliferation, as well as cell invasion and metastasis. Acts as a direct caspase inhibitor. Directly bind to the active site pocket of CASP3 and CASP7 and obstructs substrate entry. Inactivates CASP9 by keeping it in a monomeric, inactive state. Acts as an E3 ubiquitin-protein ligase regulating NF-kappa-B signaling and the target proteins for its E3 ubiquitin-protein ligase activity include: RIPK1, CASP3, CASP7, CASP8, CASP9, MAP3K2/MEKK2, DIABLO/SMAC, AIFM1, CCS and BIRC5/survivin. Ubiquitinion of CCS leads to enhancement of its chaperone activity toward its physiologic target, SOD1, rather than proteasomal degradation. Ubiquitinion of MAP3K2/MEKK2 and AIFM1 does not lead to proteasomal degradation. Plays a role in copper homeostasis by ubiquitinationg COMMD1 and promoting its proteasomal degradation. Can |
| Subcellular Location | Cytoplasm. Nucleus. Note=TLE3 promotes its nuclear localization. |
| Tissue Specificity | Ubiquitous, except peripheral blood leukocytes. |
| Top Pathways | Apoptosis, Ubiquitin mediated proteolysis, Focal adhesion, Small cell lung cancer, Toxoplasmosis |