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Volume 23, Issue 2
  • ISSN: 2211-3525
  • E-ISSN: 2211-3533

Abstract

Aims

To perform screening of the natural phytoconstituents against COVID-19 main protease.

Background

COVID-19 is an atypical virus that is universal around the globe. WHO (World Health Organization) has also affirmed the emergency public health concerns regarding COVID-19. As COVID-19 spreads globally within a shorter duration, there is a great demand for effective therapy with minimal side effects.

Objective

To perform SP and XP docking of the naturally obtained ligand Quercetin (flavonoid) based on HTVS.

To identify the effectiveness of natural phytoconstituents for COVID-19 main protease virus.

Methods

In the present study, natural ligands were used for performing the virtual screening, which was obtained from Prestwick Phytochemical Library by applying hierarchal screening. Several docking protocols, such as SP and XP, are used to screen the best natural hit compounds. The three best-hit compounds and hydroxychloroquine were further studied for SAR analysis. Moreover, the ADME study by QikProp and the identification of biological sources were carried out by Duke's Phytochemical and Ethnobotanical Databases.

Results

The results suggest that Quercetin showed good binding affinity towards 6LU7 (-56.689 kcal/mol), which could be an effective natural phytoconstituent for COVID-19.

Conclusion

Based on HTVS, SP, and XP docking, the naturally obtained ligand Quercetin (a flavonoid) can be used in place of Hydroxychloroquine against COVID-19's main protease virus. This scientific exploration will help to identify the effective natural compound for the COVID-19 main protease virus.

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In-silico Screening of Natural Compound Library against COVID-19 Main Protease
Anti Infect. Agents 23, E22113525310221 (2025); https://doi.org/10.2174/0122113525310221240713022605
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  • Article Type:     Research Article
Keyword(s): ADME properties; COVID-19; HTVS; hydroxychloroquine; Natural molecules; SAR studies

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