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10.1016/j.bbrc.2021.05.058

http://scihub22266oqcxt.onion/10.1016/j.bbrc.2021.05.058
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suck abstract from ncbi


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pmid34049205      Biochem+Biophys+Res+Commun 2021 ; 562 (ä): 89-93
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  • Recognition through GRP78 is enhanced in the UK, South African, and Brazilian variants of SARS-CoV-2; An in silico perspective #MMPMID34049205
  • Ibrahim IM; Elfiky AA; Elgohary AM
  • Biochem Biophys Res Commun 2021[Jul]; 562 (ä): 89-93 PMID34049205show ga
  • New SARS-CoV-2 variants emerged in the United Kingdom and South Africa in December 2020 in concomitant with the Brazillian variant in February 2021 (B.1.1.248 lineage) and currently sparking worldwide during the last few months. The new strain 501.V2 in South Africa bears three mutations in the spike receptor-binding domain (RBD); K417 N, E484K, and N501Y, while the Brazilian B.1.1.248 lineage has 12 mutations. In the current study, we simulate the complex ACE2-SARS-CoV-2 spike RBD system in which the RBD is in the wild-type and mutated isoforms. Additionally, the cell-surface Glucose Regulated Protein 78 (CS-GRP78) associated with the ACE2-SARS-CoV-2 spike RBD complex (ACE2-S RBD) is modeled at the presence of these mutant variants of the viral spike. The results showed that E484K and N501Y are critical in viral spike recognition through either ACE2 or CS-GRP78. The mutated variants (the UK, South African, and Brazilian) of the spike RBD tightly bind to GRP78 more than in the case of the wild-type RBD. These results point to the potent role of GRP78 with ACE2 in the attachment of the new variants, which could be a key for the design of inhibitors to block SARS-CoV-2 attachment and entry to the host cell.
  • |*Computer Simulation[MESH]
  • |Angiotensin-Converting Enzyme 2/chemistry/metabolism[MESH]
  • |Brazil[MESH]
  • |Endoplasmic Reticulum Chaperone BiP[MESH]
  • |Heat-Shock Proteins/chemistry/*metabolism[MESH]
  • |Humans[MESH]
  • |Molecular Docking Simulation[MESH]
  • |Molecular Dynamics Simulation[MESH]
  • |Mutation[MESH]
  • |Receptors, Virus/chemistry/metabolism[MESH]
  • |SARS-CoV-2/chemistry/genetics/*metabolism[MESH]
  • |South Africa[MESH]
  • |Spike Glycoprotein, Coronavirus/chemistry/genetics/metabolism[MESH]
  • |Substrate Specificity[MESH]
  • |United Kingdom[MESH]


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