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p53-regulated apoptosis-inducing protein 1 TPIP1 is a family of eukaryotic proteins whose expression is induced by wild-type p53. Ectopically expressed TPIP1, which is localized within mitochondria, leads to apoptotic cell death through dissipation of mitochondrial A(psi)m. Phosphorylation of p53 Ser-46 regulates the transcriptional activation of TPIP1, thereby mediating p53-dependent apoptosis. |
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