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• W2889478976 startingPage "951" @default.
• W2889478976 abstract "The DNA-binding ability of p53 represents the crux of its tumor suppressive activities, which involves transcriptional activation of target genes responsible for apoptosis and cell-cycle arrest. Mutational occurrences within or in close proximity to the DNA-binding surface of p53 have accounted for the loss of direct DNA-binding ability and inactivation implicated in many cases of cancer. Moreover, the design of therapeutic compounds that can restore DNA-binding ability in p53 mutants has been identified as a way forward in curtailing their oncogenic activities. However, there is still the need for more insights into evaluate the perturbations that occur at the DNA-binding interface of mp53 relative to DNA-binding loss, inactivation, and design of potent reactivators, hence the purpose of this study. Therefore, we evaluated p53-structural (R175H) and contact (R273C) mutational effects using tunnel perturbation analysis and other computational tools. We identified significant perturbations in the active tunnels of p53, which resulted in altered geometry and loss, unlike in the wild-type p53. This corroborated with structural, DNA-binding, and interaction network analysis, which showed that loss of flexibility, repulsion of DNA-interactive residues, and instability occurred at the binding interface of both mutants. Also, these mutations altered bonding interactions and network topology at the DNA-binding interface, resulting in the reduction of p53-DNA binding proximity and affinity. Therefore, these findings would aid the structure-based design of novel chemical entities capable of restoring p53-DNA binding and activation." @default.
• W2889478976 created "2018-09-07" @default.
• W2889478976 creator A5086232993 @default.
• W2889478976 date "2018-08-30" @default.
• W2889478976 modified "2023-09-26" @default.
• W2889478976 title "Dynamic perspectives into the mechanisms of mutation‐induced p53‐DNA binding loss and inactivation using active perturbation theory: Structural and molecular insights toward the design of potent reactivators in cancer therapy" @default.
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• W2889478976 doi "https://doi.org/10.1002/jcb.27458" @default.
• W2889478976 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30160791" @default.
• W2889478976 hasPublicationYear "2018" @default.
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