Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity

Glucose-regulated protein 78 (GRP78) might be a receptor for SARS-CoV-2 to bind and enter the host cell. Recently reported mutations in the spike glycoprotein unique to the receptor-binding domain (RBD) of different variants might increase the binding and pathogenesis. However, it is still not known...

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Autores principales: Abbas Khan, Anwar Mohammad, Inamul Haq, Mohammad Nasar, Waqar Ahmad, Qudsia Yousafi, Muhammad Suleman, Sajjad Ahmad, Aqel Albutti, Taimoor Khan, Sulaiman K. Marafie, Eman Alshawaf, Syed Shujait Ali, Jehad Abubaker, Dong-Qing Wei
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:eca055d1a3644e9792cfcca8455fd8732021-11-25T18:25:11ZStructural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity10.3390/microorganisms91123312076-2607https://doaj.org/article/eca055d1a3644e9792cfcca8455fd8732021-11-01T00:00:00Zhttps://www.mdpi.com/2076-2607/9/11/2331https://doaj.org/toc/2076-2607Glucose-regulated protein 78 (GRP78) might be a receptor for SARS-CoV-2 to bind and enter the host cell. Recently reported mutations in the spike glycoprotein unique to the receptor-binding domain (RBD) of different variants might increase the binding and pathogenesis. However, it is still not known how these mutations affect the binding of RBD to GRP78. The current study provides a structural basis for the binding of GRP78 to the different variants, i.e., B.1.1.7, B.1.351, B.1.617, and P.1 (spike RBD), of SARS-CoV-2 using a biomolecular simulation approach. Docking results showed that the new variants bound stronger than the wild-type, which was further confirmed through the free energy calculation results. All-atom simulation confirmed structural stability, which was consistent with previous results by following the global stability trend. We concluded that the increased binding affinity of the B.1.1.7, B.1.351, and P.1 variants was due to a variation in the bonding network that helped the virus induce a higher infectivity and disease severity. Consequently, we reported that the aforementioned new variants use GRP78 as an alternate receptor to enhance their seriousness.Abbas KhanAnwar MohammadInamul HaqMohammad NasarWaqar AhmadQudsia YousafiMuhammad SulemanSajjad AhmadAqel AlbuttiTaimoor KhanSulaiman K. MarafieEman AlshawafSyed Shujait AliJehad AbubakerDong-Qing WeiMDPI AGarticleCOVID-19SARS-CoV-2new variantsGRP78infectivityBiology (General)QH301-705.5ENMicroorganisms, Vol 9, Iss 2331, p 2331 (2021)
institution DOAJ
collection DOAJ
language EN
topic COVID-19
SARS-CoV-2
new variants
GRP78
infectivity
Biology (General)
QH301-705.5
spellingShingle COVID-19
SARS-CoV-2
new variants
GRP78
infectivity
Biology (General)
QH301-705.5
Abbas Khan
Anwar Mohammad
Inamul Haq
Mohammad Nasar
Waqar Ahmad
Qudsia Yousafi
Muhammad Suleman
Sajjad Ahmad
Aqel Albutti
Taimoor Khan
Sulaiman K. Marafie
Eman Alshawaf
Syed Shujait Ali
Jehad Abubaker
Dong-Qing Wei
Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity
description Glucose-regulated protein 78 (GRP78) might be a receptor for SARS-CoV-2 to bind and enter the host cell. Recently reported mutations in the spike glycoprotein unique to the receptor-binding domain (RBD) of different variants might increase the binding and pathogenesis. However, it is still not known how these mutations affect the binding of RBD to GRP78. The current study provides a structural basis for the binding of GRP78 to the different variants, i.e., B.1.1.7, B.1.351, B.1.617, and P.1 (spike RBD), of SARS-CoV-2 using a biomolecular simulation approach. Docking results showed that the new variants bound stronger than the wild-type, which was further confirmed through the free energy calculation results. All-atom simulation confirmed structural stability, which was consistent with previous results by following the global stability trend. We concluded that the increased binding affinity of the B.1.1.7, B.1.351, and P.1 variants was due to a variation in the bonding network that helped the virus induce a higher infectivity and disease severity. Consequently, we reported that the aforementioned new variants use GRP78 as an alternate receptor to enhance their seriousness.
format article
author Abbas Khan
Anwar Mohammad
Inamul Haq
Mohammad Nasar
Waqar Ahmad
Qudsia Yousafi
Muhammad Suleman
Sajjad Ahmad
Aqel Albutti
Taimoor Khan
Sulaiman K. Marafie
Eman Alshawaf
Syed Shujait Ali
Jehad Abubaker
Dong-Qing Wei
author_facet Abbas Khan
Anwar Mohammad
Inamul Haq
Mohammad Nasar
Waqar Ahmad
Qudsia Yousafi
Muhammad Suleman
Sajjad Ahmad
Aqel Albutti
Taimoor Khan
Sulaiman K. Marafie
Eman Alshawaf
Syed Shujait Ali
Jehad Abubaker
Dong-Qing Wei
author_sort Abbas Khan
title Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity
title_short Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity
title_full Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity
title_fullStr Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity
title_full_unstemmed Structural-Dynamics and Binding Analysis of RBD from SARS-CoV-2 Variants of Concern (VOCs) and GRP78 Receptor Revealed Basis for Higher Infectivity
title_sort structural-dynamics and binding analysis of rbd from sars-cov-2 variants of concern (vocs) and grp78 receptor revealed basis for higher infectivity
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/eca055d1a3644e9792cfcca8455fd873
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