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The SARS-CoV-2 Exerts a Distinctive Strategy for Interacting with the ACE2 Human Receptor
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Journal Article
The SARS-CoV-2 Exerts a Distinctive Strategy for Interacting with the ACE2 Human Receptor
2020
Overview
The COVID-19 disease has plagued over 200 countries with over three million cases and has resulted in over 200,000 deaths within 3 months. To gain insight into the high infection rate of the SARS-CoV-2 virus, we compare the interaction between the human ACE2 receptor and the SARS-CoV-2 spike protein with that of other pathogenic coronaviruses using molecular dynamics simulations. SARS-CoV, SARS-CoV-2, and HCoV-NL63 recognize ACE2 as the natural receptor but present a distinct binding interface to ACE2 and a different network of residue–residue contacts. SARS-CoV and SARS-CoV-2 have comparable binding affinities achieved by balancing energetics and dynamics. The SARS-CoV-2–ACE2 complex contains a higher number of contacts, a larger interface area, and decreased interface residue fluctuations relative to the SARS-CoV–ACE2 complex. These findings expose an exceptional evolutionary exploration exerted by coronaviruses toward host recognition. We postulate that the versatility of cell receptor binding strategies has immediate implications for therapeutic strategies.
Publisher
MDPI AG,MDPI
Subject
/ Angiotensin converting enzyme
/ Angiotensin-Converting Enzyme 2
/ Betacoronavirus - metabolism
/ Coronavirus NL63, Human - chemistry
/ Coronavirus NL63, Human - metabolism
/ COVID-19
/ Humans
/ Middle East respiratory syndrome
/ Molecular Dynamics Simulation
/ Peptidyl-Dipeptidase A - chemistry
/ Peptidyl-Dipeptidase A - metabolism
/ Proteins
/ Severe acute respiratory syndrome coronavirus 2
/ Spike Glycoprotein, Coronavirus - chemistry
/ Spike Glycoprotein, Coronavirus - metabolism
/ Viruses
