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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Interaction between replication protein A and p53 is disrupted after UV damage in a DNA repair-dependent manner
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Interaction between replication protein A and p53 is disrupted after UV damage in a DNA repair-dependent manner

机译:紫外线损伤后,复制蛋白A和p53之间的相互作用以DNA修复依赖性方式被破坏

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摘要

Replication protein A (RPA) is required for both DNA replication and nucleotide excision repair. Previous studies have shown that RPA interacts with the tumor sup- pressor p53. Herein, we have mapped a 20-amino acid region in the N-terminal part of p53 that is essential for its binding to RPA. This region is distinct from the minimal activation domain of p53 previously identified. We also demonstrate that UV radiation of cells greatly reduces the ability of RPA to bind to p53. Interestingly, damage-induced hyperphosphorylated RPA does not associate with p53.
机译:DNA复制和核苷酸切除修复均需要复制蛋白A(RPA)。先前的研究表明,RPA与肿瘤抑制因子p53相互作用。在本文中,我们在p53的N端部分绘制了一个20个氨基酸的区域,该区域对其与RPA的结合至关重要。该区域不同于先前鉴定的p53的最小激活结构域。我们还证明了细胞的紫外线辐射大大降低了RPA与p53结合的能力。有趣的是,损伤诱导的高磷酸化RPA与p53不相关。

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