A bioluminescent and homogeneous SARS-CoV-2 spike RBD and hACE2 interaction assay for antiviral screening and monitoring patient neutralizing antibody levels.
Discussion: Global data analysis shows that infectivity strengthening and virion stable mutations are on the rise (especially the frequency of S477N, N439K, V483A, and V367F), clearly indicating the natural selection of mutations with stronger transmissibility.
Molecular rationale for SARS-CoV-2 spike circulating mutations able to escape bamlanivimab and etesevimab monoclonal antibodies.
Result: Table S2), that is, DeltaDeltaGCoV-2(V483A) = - 1.70 +- 0.18 kcal/mol, DeltaDeltaGCoV-2(
Result: led to the following list of naturally occurring mutations at the SARS-CoV-2 spike protein residues contacting the LY-CoV555 mAb: E484A/D/G/K/Q/R/V, Q493H/K/L/R, S494A/P/R/T, L452M/Q/R, Y449D/F/H/N/S, T470A/I/K/N, V483A/F/G/I/L, F486I/L/S, Y489C/F/H/S, and F490L/S/V/Y.
Global Prevalence of Adaptive and Prolonged Infections' Mutations in the Receptor-Binding Domain of the SARS-CoV-2 Spike Protein.
Abstract: In the case of prolonged infections' mutations (long-term SARS-CoV-2 infections), V483A (0.009%) was found to be dominant followed by Q493R (0.009%), while other mutations were found in less than 0.007% of the studied sequences.
Result: Country-wise, V483A mutation was found only in the USA (63/300280 sequences) and the UK (11/178878 sequences).
Result: During this period, the prevalence of Q493R, Q493K, E484A and T470N increased by 0.004, 0.001, 0.003 and 0.001% points, respectively, while the prevalence of V483A and T415A decreased by 0.01 and 0.005% points, respectively.
Result: Globally, these mutations w
Additional Positive Electric Residues in the Crucial Spike Glycoprotein S Regions of the New SARS-CoV-2 Variants.
Result: Of these, five (S477N, E484K, E484Q, S494L, S494P) were found in viruses circulating in Bengaluru, and the amino acid replacement V483A was from an imported case.
Discussion: All nine amino acid changes, namely N440K, S477N, V483A, E484K/Q, F490S, S494L/P, N501Y are associated with immune escape.
SARS-CoV-2 mutations: the biological trackway towards viral fitness.
Result: V483A in 24 strains have small effects (DeltaDeltaG = -0.196 kcal/mol) and V367F in 13 strains has moderate stabilizing effects (DeltaDeltaG = -0.597 kcal/mol) on RBD.
Result: The DeltaDeltaDeltaG of common variants V483A and V367F are close to 0, meaning that these mutations have no effects on binding affinity.
Table: V483A
Discussion: In addition, common viral mutations D936Y in 37 strains, V483A in 24 strains and V367F in 14 strains can also induce the stabilizing effects on SARS-Cov-2 full-length S or RBD (Table 3).