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• W2896985391 endingPage "4018" @default.
• W2896985391 startingPage "4006" @default.
• W2896985391 abstract "The CBP (CREB-binding protein) and p300 are related to transcriptional coactivator family and are involved in several post-translational modifications, in which the acetylation is an important factor because it commences the transcription process. Experimental studies report that CTPB (N-(4-chloro-3-trifluoromethyl-phenyl)-2-ethoxy-6-pentadecyl-benzamide) and CTB (N-(4-chloro-3-trifluoromethyl-phenyl)-2-ethoxybenzamide) are good activators of p300 HAT enzyme, but yet, the molecular mechanism of their activation is not explored. The present study pertains to determine the intermolecular interactions, stability and binding free energy of CTB and CTPB from the molecular docking, molecular dynamics (MD) simulation and binding free energy calculation. The docking studies of the molecules reveal that the docking score of CTPB (-15.64 kcal/mol) is higher than that of CTB (-12.30 kcal/mol); on the contrary, CTB forms a strong interaction with the key residues of catalytic site (Tyr1467 and Trp1436) compared with CTPB. The MD simulation shows the stability of both molecules in the active site of p300 and their interactions. Furthermore, both docking and MD simulation studies of CTB confirm that it forms expected key interactions and retain the interactions with the active site amino acid residues of p300 when compared with CTPB. For this reason, the CTB recruits more acetyl-CoA in the active site of p300 compared with CTPB; it leads to activate the acetylation process; hence, CTB may be a best activator than CTPB. The binding free energy value of CTPB (-24.79 ± 2.38 kcal/mol) is higher when compared with that of CTB (-12.14 ± 1.30 kcal/mol) molecule; perhaps, the interaction of pentadecyl chain of CTPB with p300, whereas in CTB, such a group is absent. Communicated by Ramaswamy H. Sarma." @default.
• W2896985391 created "2018-10-26" @default.
• W2896985391 creator A5014765743 @default.
• W2896985391 creator A5040476078 @default.
• W2896985391 creator A5041302538 @default.
• W2896985391 date "2019-01-13" @default.
• W2896985391 modified "2023-09-29" @default.
• W2896985391 title "Investigation of activation mechanism and conformational stability of N-(4-chloro-3-trifluoromethyl-phenyl)-2-ethoxybenzamide and N-(4-chloro-3-trifluoromethyl-phenyl)-2-ethoxy-6-pentadecyl-benzamide in the: active site of p300 histone acetyl transferase enzyme by molecular dynamics and binding free energy studies" @default.
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• W2896985391 doi "https://doi.org/10.1080/07391102.2018.1533497" @default.
• W2896985391 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30301423" @default.
• W2896985391 hasPublicationYear "2019" @default.
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