Abstract: We confirmed the presence of E156G/Delta157-158 from cases concurrently screened, in addition to other circulating spike (S1) mutations such as T19R, T95I, L452R, E484Q, and D614G.
Figure: The affinity for the ACE2 receptor was normalized to the D614G-pseudotyped lentiviral particles.
Figure: The fold difference in response to the neutralizing plasma was measured compared to the reference D614G mutant spike
Figure: The fold difference in response to the neutralizing plasma was measured compared to the reference D614G mutant spike PV (n = 14).
Identification of a novel SARS-CoV-2 variant with a truncated protein in ORF8 gene by next generation sequencing.
Abstract: This variant belongs to Pango lineage B.1.1291, which also contains the D614G mutation in the Spike (S) gene.
Table: D614G
Tracking SARS-CoV-2 variants by entire S-gene analysis using long-range RT-PCR and Sanger sequencing.
PMID: 35304093
2022
Clinica chimica acta; international journal of clinical chemistry
5Result: Samples that could not determine the lineage of SARS-CoV-2 because of the lack of specific mutation patterns except for S:D614G were classified as ""Undetermined."" To assess the dynamic of circulating SARS-CoV-2, we compared our data with the reported lineages in Chiba University Hospital."
Abstract: RESULTS: The S:D614G mutation was found in all samples.
Result: All of the sequenced samples had S:D614G mutation.
Figure: Undetermined includes various lineages of SARS-CoV-2 which could not be determined the lineages because of the lack of specific mutation patterns except for S:D614G.
Interaction Analysis of the Spike Protein of Delta and Omicron Variants of SARS-CoV-2 with hACE2 and Eight Monoclonal Antibodies Using the Fragment Molecular Orbital Method.
PMID: 35312321
2022
Journal of chemical information and modeling
Introduction: The S protein mutations in the alpha variant are DeltaH69/DeltaV70, Delta144/144, N501Y, A570D, D614G, P681H, T716I, S982A, and D1118H.
Introduction: The mutations of the S protein in the Delta variant are T19R, E156G, Delta157/158, L452R, T478K, D614G, P681R, and D950N.
Neutralisation Hierarchy of SARS-CoV-2 Variants of Concern Using Standardised, Quantitative Neutralisation Assays Reveals a Correlation With Disease Severity; Towards Deciphering Protective Antibody Thresholds.
Introduction: As the pandemic progressed, a number of single amino acid mutations in the Spike protein were detected, such as D614G and A222V.
Introduction: Referred to as Cluster 5 or B.1.1.298, several different groups of mutations were identified, with the most abundant population containing missense and deletion mutations on the Spike; 69/70del, Y453F and D614G.
Introduction: The D614G mutation was found to increase the density of Spike protein on virions and infectivity.
Table: D614G
Coronavirus Genomes and Unique Mutations in Structural and Non-Structural Proteins in Pakistani SARS-CoV-2 Delta Variants during the Fourth Wave of the Pandemic.
Result: The most common non-synonymous and indel mutations, present in all complete genome samples were spike_T478K, spike_T19R, spike_L452R, spike_F157del, spike_E156G, spike_P681R, spike_D614G, spike_R158del, and spike_G142D (Table 3).
Conformational dynamics and allosteric modulation of the SARS-CoV-2 spike.
Introduction: At the same time, the enhanced exposure of the RBM in the D614G variant led to increased sensitivity to neutralizing antibodies.
Introduction: By the summer of 2020, the SARS-CoV-2 S variant D614G (B.1 lineage) had supplanted the ancestral virus (strain Wuhan-1) worldwide, and structural analysis showed that D614G disrupts an interprotomer contact.
Introduction: Nonetheless, antibodies that target the S2 stalk further promoted the RBD-up conformation on the D614G spike.
Introduction: The D614G spike existed in an equilibrium where the RBD favors the up conformation prior to antibody binding.
Discu
SARS-CoV-2 Omicron variant: Immune escape and vaccine development.
Introduction: Previous studies illustrated that D614G reduces the binding affinity to ACE2 but enhances the protease cleavage of S1/S2, leading to higher transmissibility.
Introduction: Specifically, BA.1 and BA.2 display 20 identical spike mutations, which are G339D, S373P, S375F, K417N, N440K, S477N, T478K, E484A, Q493R, Q498R, N501Y, Y505H, D614G, H655Y, N679K, P68
The SARS-CoV-2 Delta variant induces an antibody response largely focused on class 1 and 2 antibody epitopes.
Introduction: We compare the specificity of Delta-elicited antibodies to those elicited by earlier SARS-CoV-2 variants, including the early 2020 (i.e., Wuhan-Hu-1 and D614G) and Beta variants.
Result: As expected, Delta breakthrough infection resulted in higher neutralizing titers against both D614G (by ~4.8-fold) and Delta (by ~3.8-fold) spikes than 2x BNT162b2 alone.
Result: As expected, the 2x BNT162b2 and Delta breakthrough plasmas most potently neutralized the D614G spike, and primary Delta infection plasmas most potently neutralized the Delta spike (Fig 6 and S7).
Result: Compared to the Wuhan-Hu-1 prototypical early 2020 virus, Delta has multiple mutations in the spike protein: T19R, Delt
Clinico-Genomic Analysis Reiterates Mild Symptoms Post-vaccination Breakthrough: Should We Focus on Low-Frequency Mutations?
Introduction: One such VOC, B.1.617.2, also known as the Delta variant and first identified in India in October 2020, is characterized by mutations T19R, G142D, Delta157-158, R158G, L452, T478K, D614G, P681R, and D950N in the spike protein.