Overview:
XIAP is a member of a family of proteins which inhibit apoptosis and act as mammalian cell-death suppressors. XIAP inhibits at least 2 members of the caspase family of cell-death proteases, caspase-3 and caspase-7 (1). In addition, XIAP inhibits apoptosis induced by menadione, a potent inducer of free radicals, and ICE. Furthermore, XIAP can mediate protection of cells from apoptosis by utilizing both a JNK1 activation pathway that involves ILPIP and a caspase inhibition pathway that is independent of ILPIP (2). Disruption of the XIAP gene in human colon cancer cells can enhance sensitivity of these cells to exogenously added TRAIL suggesting that XIAP is a nonredundant modulator of TRAIL-mediated apoptosis.
References:
1. Deveraux Q L, et al: X-linked X-linked IAP is a direct inhibitor of cell-death proteases. Nature 388: 300-304, 1997. 2. Tang G, et al: Inhibition of JNK activation through NF- kappa-B target genes. Nature 414: 313-317, 2001.
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也就是说只要是兔子产生的抗体，羊抗兔（也叫抗抗体或者2抗）都可与之结合。
兔子产生的是一级抗体
羊的为二级抗体
在试验中，二抗经常被做了手脚，打上了标记，比如辣根过氧化物酶，经常被用在ELISA，WESTERN等经典的生物学试验中。
