The role of acetylation sites in the regulation of p53 activity.

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ID: 64714
2019
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Abstract
As a "genomic guardian", p53 mainly functions as a transcription factor that regulates downstream targets responsible for cell fate control, and the activity of p53 is tightly regulated by a complex network that include an abundance of post-translational modifications. Notably, acetylation of p53 at many positions has been demonstrated to play a major role in accurate p53 regulation and cell fate determination. However, no evidence has been provided to compare the effect of acetylation at different sites on p53 regulation. Here, we constructed six acetylation-defective p53 mutants that lysine was substituted by arginine at residues 120, 164, 305, 320, 370/372/373 or 381/382/386, respectively, and determined their effects on p53 activity systematically. Our results showed that all six mutants exhibited diminished transactivation ability and selective regulation of target genes expression through distinct mechanisms. Specifically, lysine 370/372/373 and 381/382/386 mutations decreased p53 stability, and lysine 305 mutation reduced p53 phosphorylation level at serine 15, while lysine 120 and 164 mutations decreased p53 acetylation level at lysine 382. Collectively, these data indicate that acetylation of p53 at different sites has diverse regulatory effects on p53 transcriptional activity through different mechanisms.
Reference Key
wang2019themolecular Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wang, Yun;Chen, Yaqi;Chen, Qiang;Zhang, Xiuyuan;Wang, Hongye;Wang, Zhonghua;Wang, Jian;Tian, Chunyan;
Journal molecular biology reports
Year 2019
DOI
10.1007/s11033-019-05141-7
URL
Keywords
regulation p53 acetylation post-translational modifications acetylation-defective mutant

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