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Related Experiment Video

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Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors
05:46

Rapid Screening of HIV Reverse Transcriptase and Integrase Inhibitors

Published on: April 9, 2014

Fragment-based screen against HIV protease.

Alexander L Perryman1, Qing Zhang, Holly H Soutter

  • 1Department of Molecular Biology, The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA 92037, USA.

Chemical Biology & Drug Design
|July 28, 2010
PubMed
Summary
This summary is machine-generated.

This study used fragment-based screening and X-ray crystallography to discover two new binding sites on HIV protease. These findings identify novel targets for developing new antiviral therapies.

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Area of Science:

  • Structural Biology
  • Drug Discovery
  • Virology

Background:

  • HIV protease (PR) is a critical target for antiretroviral therapy.
  • Existing drugs target the active site, necessitating new strategies to overcome resistance.

Purpose of the Study:

  • To identify novel binding sites on HIV protease using fragment-based screening.
  • To characterize fragment binding and its effect on HIV protease conformation.
  • To explore fragment binding to inhibitor-bound HIV protease.

Main Methods:

  • Fragment-based screening using the Active Sight library.
  • X-ray crystallography with multiple crystal forms.
  • Data collection and analysis to 1.3 Å resolution.

Main Results:

  • Two novel small-molecule binding sites on HIV protease were identified.
  • Fragment binding induced distinct conformations and crystal forms.
  • Specific fragments, 2-methylcyclohexanol and indole-6-carboxylic acid, were characterized at these sites.

Conclusions:

  • This is the first fragment-based crystallographic screen against HIV protease.
  • The study demonstrates a novel approach by screening fragments against an inhibitor-bound target.
  • Findings provide a foundation for designing new HIV protease inhibitors targeting novel sites.