Scientific background: |
BIRC4, baculoviral IAP repeat-containing protein 4 is also known as XIAP (X-linked inhibitor of apoptosis protein). The BIRC4 gene comprises 6 exons. This gene is mapped to chromosome Xq25. This gene encodes a protein that belongs to a family of apoptotic suppressor proteins. Members of this family share a conserved motif termed, baculovirus IAP repeat, which is necessary for their anti-apoptotic function. This protein functions through binding to tumor necrosis factor receptor-associated factors TRAF1 and TRAF2 and inhibits apoptosis induced by menadione, a potent inducer of free radicals, and interleukin 1-beta converting enzyme. This protein also inhibits at least two members of the caspase family of cell-death proteases, caspase-3 and caspase-7. Mutations in this gene are the cause of X-linked lymphoproliferative syndrome. Alternate splicing results in multiple transcript variants. Pseudogenes of this gene are found on chromosomes 2 and 11. |
References: |
1. Cummins, J. M., Kohli, M., Rago, C., Kinzler, K. W., Vogelstein, B., Bunz, F.X-linked inhibitor of apoptosis protein (XIAP) is a nonredundant modulator of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-mediated apoptosis in human cancer cells.Cancer Res. 64: 3006-3008, 2004.
2. Deveraux, Q. L., Takahashi, R., Salvesen, G. S., Reed, J. C.X-linked IAP is a direct inhibitor of cell-death proteases.Nature 388: 300-304, 1997.
3. Kim, J., Park, J., Choi, S., Chi, S.-G., Mowbray, A. L., Jo, H., Park, H.X-linked inhibitor of apoptosis protein is an important regulator of vascular endothelial growth factor-dependent bovine aortic endothelial cell survival.Circ. Res. 102: 896-904, 2008.
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