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Vol. 24. Issue 1.
Pages 1-12 (January - March 2023)
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Vol. 24. Issue 1.
Pages 1-12 (January - March 2023)
Original
Determination of binding affinity of tunicamycin with SARS-CoV-2 proteins: Proteinase, protease, nsp2, nsp9, ORF3a, ORF7a, ORF8, ORF9b, envelope and RBD of spike glycoprotein
Determinación de la afinidad de unión de la tunicamicina con las proteínas del SARS-CoV-2: proteinasa, proteasa, nsp2, nsp9, ORF3a, ORF7a, ORF8, ORF9b, envolvente y RBD de la glicoproteína Spike
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Ali Adel Dawood
Corresponding author
aad@uomosul.edu.iq

Autor para correspondencia.
Microbiology, Dept. of Medical Biology, College of Medicine, University of Mosul. Mosul, Iraq
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Abstract
Introduction

Despite the availability of several COVID-19 vaccines, the incidence of infections remains a serious issue. Tunicamycin (TM), an antibiotic, inhibited tumor growth, reduced coronavirus envelope glycoprotein subunit 2 synthesis, and decreased N-linked glycosylation of coronavirus glycoproteins.

Objectives

Our study aimed to determine how tunicamycin interacts with certain coronavirus proteins (proteinase, protease, nsp9, ORF7a, ORF3a, ORF9b, ORF8, envelope protein, nsp2, and RBD of spike glycoprotein). Methods: Several types of chemo and bioinformatics tools were used to achieve the aim of the study. As a result, virion's effectiveness may be impaired.

Results

TM can bind to viral proteins with various degrees of affinity. The proteinase had the highest binding affinity with TM. Proteins (ORF9b, ORF8, nsp9, and RBD) were affected by unfavorable donor or acceptor bonds that impact the degree of docking. ORF7a had the weakest affinities.

Conclusions

This antibiotic is likely to effect on SARS-CoV-2 in clinical studies.

Keywords:
COVID-19
Docking
Tunicamycin
Spike
Envelope
Resumen
Introducción

A pesar de la disponibilidad de varias vacunas contra la COVID-19, la incidencia de infecciones sigue siendo un problema grave. La tunicamicina (TM), un antibiótico, inhibió el crecimiento tumoral, redujo la síntesis de la subunidad 2 de la glicoproteína de la envoltura del coronavirus y disminuyó la glicosilación ligada a N de las glicoproteínas del coronavirus.

Objetivos

Nuestro estudio tuvo como objetivo determinar cómo interactúa la tunicamicina con ciertas proteínas del coronavirus (proteinasa, proteasa, nsp9, ORF7a, ORF3a, ORF9b, ORF8, proteína de la envoltura, nsp2 y RBD de glicoproteína de punta).

Métodos

Se utilizaron varios tipos de herramientas de quimioterapia y bioinformática para lograr el objetivo del estudio. Como resultado, la eficacia del virión puede verse afectada.

Resultados

La TM puede unirse a proteínas virales con diversos grados de afinidad. La proteinasa tenía la mayor afinidad de unión con TM. Las proteínas (ORF9b, ORF8, nsp9 y RBD) se vieron afectadas por enlaces donantes o aceptores desfavorables que afectan el grado de acoplamiento. ORF7a tenía las afinidades más débiles.

Conclusiones

Es probable que este antibiótico tenga efecto sobre el SARS-CoV-2 en estudios clínicos.

Palabras clave:
COVID-19
acoplamiento
tunicamicina
espiga
envoltura

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