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Active site binding modes of curcumin in HIV-1 protease and integrase

Academic Article
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Overview

authors

  • Vajragupta, O.
  • Boonchoong, P.
  • Morris, G. M.
  • Olson, Arthur

publication date

  • July 2005

journal

  • Bioorganic & Medicinal Chemistry Letters  Journal

abstract

  • Structure models for the interaction of curcumin with HIV-1 integrase (IN) and protease (PR) were investigated using computational docking. Curcumin was found to bind preferentially in similar ways to the active sites of both IN and PR. For IN, the binding site is formed by residues Asp64, His67, Thr66, Glu92, Thr93, Asp116, Ser119, Asn120, and Lys159. Docked curcumin contacts the catalytic residues adjacent to Asp116 and Asp64, and near the divalent metal (Mg2+). In the PR docking, the curcumin structure fitted well to the active site, interacting with residues Asp25, Asp29, Asp30, Gly27', Asp29', and Asp30'. The results suggest that o-hydroxyl and/or keto-enol structures are important for both IN and PR inhibitory actions. The symmetrical structure of curcumin seems to play an important role for binding to the PR protein, whereas the keto-enol and only one side of the terminal o-hydroxyl showed tight binding to the IN active site.

subject areas

  • Binding Sites
  • Computational Biology
  • Computer Simulation
  • Crystallization
  • Crystallography, X-Ray
  • Curcumin
  • Drug Design
  • HIV Integrase
  • HIV Integrase Inhibitors
  • HIV Protease
  • HIV Protease Inhibitors
  • HIV-1
  • Molecular Structure
  • Protein Conformation
  • Structure-Activity Relationship
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Research

keywords

  • 5-CITEP
  • HIV integrase
  • HIV protease
  • HIV-1
  • curcumin
  • docking
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Identity

International Standard Serial Number (ISSN)

  • 0960-894X

Digital Object Identifier (DOI)

  • 10.1016/j.bmcl.2005.05.032

PubMed ID

  • 15950462
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Additional Document Info

start page

  • 3364

end page

  • 3368

volume

  • 15

issue

  • 14

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