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The p53 tumor suppressor protein regulates many genes that can determine different cellular outcomes such as growth arrest or cell death. Promoter-selective transactivation by p53, although critical for the different cellular outcomes, is not well understood. We report here that the human cellular apoptosis susceptibility protein (hCAS/CSE1L) associates with a subset of p53 target promoters, including...
Through direct cloning of p53 binding sequences from human genomic DNA, we have isolated a novel gene, designated p53AIP1 (p53-regulated Apoptosis-Inducing Protein 1), whose expression is inducible by wild-type p53. Ectopically expressed p53AIP1, which is localized within mitochondria, leads to apoptotic cell death through dissipation of mitochondrial ΔΨm. We have found that upon severe DNA damage,...
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