tetano
Editor, Senior Moderator
J Phys Chem Lett
. 2021 Dec 1;11745-11750.
doi: 10.1021/acs.jpclett.1c03441. Online ahead of print.
Molecular Basis of SARS-CoV-2 Nsp1-Induced Immune Translational Shutdown as Revealed by All-Atom Simulations
Jure Borišek[SUP] 1 [/SUP], Angelo Spinello[SUP] 2 [/SUP], Alessandra Magistrato[SUP] 2 [/SUP]
Affiliations
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic represents the most severe global health crisis in modern human history. One of the major SARS-CoV-2 virulence factors is nonstructural protein 1 (Nsp1), which, outcompeting with the binding of host mRNA to the human ribosome, triggers a translation shutdown of the host immune system. Here, microsecond-long all-atom simulations of the C-terminal portion of the SARS-CoV-2/SARS-CoV Nsp1 in complex with the 40S ribosome disclose that SARS-CoV-2 Nsp1 has evolved from its SARS-CoV ortholog to more effectively hijack the ribosome by undergoing a critical switch of Q/E158 and E/Q159 residues that perfects Nsp1's interactions with the ribosome. Our outcomes offer a basis for understanding the sophisticated mechanisms underlying SARS-CoV-2 diversion and exploitation of human cell components to its deadly purposes.
. 2021 Dec 1;11745-11750.
doi: 10.1021/acs.jpclett.1c03441. Online ahead of print.
Molecular Basis of SARS-CoV-2 Nsp1-Induced Immune Translational Shutdown as Revealed by All-Atom Simulations
Jure Borišek[SUP] 1 [/SUP], Angelo Spinello[SUP] 2 [/SUP], Alessandra Magistrato[SUP] 2 [/SUP]
Affiliations
- PMID: 34851631
- DOI: 10.1021/acs.jpclett.1c03441
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic represents the most severe global health crisis in modern human history. One of the major SARS-CoV-2 virulence factors is nonstructural protein 1 (Nsp1), which, outcompeting with the binding of host mRNA to the human ribosome, triggers a translation shutdown of the host immune system. Here, microsecond-long all-atom simulations of the C-terminal portion of the SARS-CoV-2/SARS-CoV Nsp1 in complex with the 40S ribosome disclose that SARS-CoV-2 Nsp1 has evolved from its SARS-CoV ortholog to more effectively hijack the ribosome by undergoing a critical switch of Q/E158 and E/Q159 residues that perfects Nsp1's interactions with the ribosome. Our outcomes offer a basis for understanding the sophisticated mechanisms underlying SARS-CoV-2 diversion and exploitation of human cell components to its deadly purposes.