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Study of Inhibitors Against SARS Coronavirus by Computational Approaches

  • Kuo-Chen Chou
  • Dong-Qing Wei
  • Qi-Shi Du
  • Suzanne Sirois
  • Hong-Bin Shen
  • Wei-Zhu Zhong
Chapter
Part of the Proteases in Biology and Disease book series (PBAD, volume 8)

Called by many as the biology's version of Swiss army knives, proteases cut long sequences of amino acids into fragments and regulate most physiological processes. They are vitally important in life cycle and have become a main target for drug design. This Chapter is focused on a special protease that plays a key role in replicating SARS (Severe Acute Respiratory Syndrome) coronavirus, the culprit of SARS disease. The progresses reported here are mainly from various computational approaches, such as structural bioinformatics, pharmacophore modelling, molecular docking, and peptide-cleavage site prediction, among others. It is highlighted that the compounds C28H34O4N7Cl, C21H36O5N6 and C21H36O5N6, as well as KZ7088, a derivative of AG7088, might be the promising candidates for further investigation, and that the octapeptides ATLQAIAS and ATLQAENV, as well as AVLQSGFR, might be converted to effective inhibitors against the SARS protease. Meanwhile, how to modify these octapeptides based on the “distorted key” theory to make them become potent inhibitors is explicitly elucidated. Also, a brief introduction is given for how to use computer-generated graphs to rapidly diagnose SARS coronavirus. Finally, a step-by-step protocol guide is given on how to use ProtIdent, a web-server developed recently, to identify the proteases and their types based on their sequence information alone. ProtIdent is a very user-friendly bioin-formatics tool that can provide desired information for both basic research and drug discovery in a timely manner. With the avalanche of protein sequences generated in the post-genomic age, it is particularly useful. ProtIdent is freely accessible to the public via the web-site at http://www.csbio.sjtu.edu.cn/bioinf/Protease/.

Keywords

SARS coronavirus proteinase KZ7088 AG7088 binding pocket octapeptide inhibitors distorted key theory ProtIdent web server 

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Kuo-Chen Chou
    • 1
    • 2
    • 3
    • 4
  • Dong-Qing Wei
    • 1
    • 2
  • Qi-Shi Du
    • 1
    • 3
  • Suzanne Sirois
    • 1
    • 5
  • Hong-Bin Shen
    • 1
    • 4
  • Wei-Zhu Zhong
    • 1
  1. 1.Gordon Life Science InstituteSan DiegoUSA
  2. 2.College of Life Science and TechnologyShanghai Jiaotong UniversityShanghaiChina
  3. 3.College of Life Science and BiotechnologyGuangxi UniversityNanningChina
  4. 4.Institute of Image Processing & Pattern RecognitionShanghai Jiaotong UniversityShanghaiChina
  5. 5.Chemistry DepartmentUniversité du Québec à Montréal (UQAM)MontréalCanada

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