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New pockets in dengue virus 2 surface identified by molecular dynamics simulation.

Carlos A Fuzo1, Léo Degrève

  • 1Grupo de Simulação Molecular, Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, 14040-901, Ribeirão Preto, SP, Brazil. cafuzo@usp.br

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Summary

Researchers identified new potential drug targets on the dengue virus E protein. Molecular dynamics simulations revealed pH-dependent pockets crucial for viral fusion, offering new strategies for antiviral drug development.

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Area of Science:

  • Structural biology
  • Computational chemistry
  • Virology

Background:

  • Limited structural information of disease-related proteins hinders drug discovery.
  • Computational chemistry tools can identify novel cavities in protein structures for lead compound identification.
  • The dengue virus E protein's conformational changes are critical for the pH-dependent fusion process.

Purpose of the Study:

  • To identify new pockets in the dengue virus E protein.
  • To evaluate the influence of acidic pH on these pockets.
  • To find potential targets for dengue disease inhibitors.

Main Methods:

  • All-atom molecular dynamics simulations with explicit solvent.
  • Modeling of physiological neutral and acidic endosomal pH conditions.
  • Analysis of ectodomain portions of the dengue virus E protein.

Main Results:

  • Several pockets with pH-dependent characteristics were identified at chain contact regions.
  • Pockets at protein-protein interfaces, induced by monomer-monomer interactions, were discovered.
  • Identified pockets show potential for designing lead compounds targeting viral fusion.

Conclusions:

  • The study identified novel, pH-sensitive pockets in the dengue virus E protein.
  • These pockets represent promising targets for developing inhibitors of viral entry and dengue disease.
  • Computational approaches are valuable for discovering new therapeutic strategies against viral infections.