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http://dx.doi.org/10.5808/GI.2016.14.3.96

Identification of Suitable Natural Inhibitor against Influenza A (H1N1) Neuraminidase Protein by Molecular Docking  

Sahoo, Maheswata (Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences)
Jena, Lingaraja (Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences)
Rath, Surya Narayan (Department of Bioinformatics, Orissa University of Agriculture & Technology)
Kumar, Satish (Bioinformatics Centre & Biochemistry, Mahatma Gandhi Institute of Medical Sciences)
Publication Information
Genomics & Informatics / v.14, no.3, 2016 , pp. 96-103 More about this Journal
Abstract
The influenza A (H1N1) virus, also known as swine flu is a leading cause of morbidity and mortality since 2009. There is a need to explore novel anti-viral drugs for overcoming the epidemics. Traditionally, different plant extracts of garlic, ginger, kalmegh, ajwain, green tea, turmeric, menthe, tulsi, etc. have been used as hopeful source of prevention and treatment of human influenza. The H1N1 virus contains an important glycoprotein, known as neuraminidase (NA) that is mainly responsible for initiation of viral infection and is essential for the life cycle of H1N1. It is responsible for sialic acid cleavage from glycans of the infected cell. We employed amino acid sequence of H1N1 NA to predict the tertiary structure using Phyre2 server and validated using ProCheck, ProSA, ProQ, and ERRAT server. Further, the modelled structure was docked with thirteen natural compounds of plant origin using AutoDock4.2. Most of the natural compounds showed effective inhibitory activity against H1N1 NA in binding condition. This study also highlights interaction of these natural inhibitors with amino residues of NA protein. Furthermore, among 13 natural compounds, theaflavin, found in green tea, was observed to inhibit H1N1 NA proteins strongly supported by lowest docking energy. Hence, it may be of interest to consider theaflavin for further in vitro and in vivo evaluation.
Keywords
influenza A Virus; molecular docking analysis; neuraminidase; phytochemicals;
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