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J Shahrekord Univ Med Sci. 2021;23(4): 168-173.
doi: 10.34172/jsums.2021.28
  Abstract View: 703
  PDF Download: 422

Original Article

In-silico comparison of post-translational modifications of SARS-CoV and SARS-CoV-2 structural proteins

Naghmeh Soltani 1 ORCID logo, Fatemeh Pakniya 1 ORCID logo, Niloofar Parchami 1 ORCID logo, Mandana Behbahani 1 ORCID logo, Hassan Mohabatkar 1* ORCID logo

1 Faculty of Biological Science and Technology, University of Isfahan, Iran
*Corresponding Author: *Corresponding Author: Hassan Mohabatkar, Faculty of Biological Science and Technology, University of Isfahan, Iran. Tel: 0098 (313) 793 4391, Email: , Email: h.mohabatkar@ast.ui.ac.ir

Abstract

Background and aims: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a newly discovered coronavirus which causes an infectious disease. The severe acute respiratory syndrome (SARS-CoV) and the Middle East respiratory syndrome (MERS) broke out in 2003 and 2012, respectively. These viruses have some structural proteins, including spike (S), membrane (M), envelope (E), and nucleocapsid (N) proteins. These proteins assist the virus in infecting cells through interaction with cell receptors, penetration into the cell, and proliferation. These coronavirus proteins are modified by post-translational modifications (PTMs) which activate various functional and interactional activities of proteins. This study aimed to investigate the PTMs in SARS-CoV/CoV-2, as well as to examine the effect of these PTMs on the pathogenicity of these two viruses.

Methods: In this study, PTMs sites were detected by different bioinformatics tools. Evaluation and comparison of PTMs were performed and their roles in structural proteins activities of SARS-CoV/CoV-2 coronaviruses were examined in order to gain a richer understanding of these modifications’ relationships with the protein activities.

Results: The PTMs sum and percentages of four structural proteins of SARS-CoV/CoV-2 were evaluated, with a focus on their effects on viral replication and pathogenesis in order to develop a method for treating these diseases. According to our study results, some of the PTMs in SARS-CoV/CoV-2 were different from each other.

Conclusion: It was concluded that SARS-CoV-2 had more pathogenicity than SARS-CoV.




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Submitted: 25 Apr 2021
Accepted: 17 Jul 2021
ePublished: 06 Dec 2021
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