EMD-43660

Single-particle
3.1 Å
EMD-43660 Deposition: 08/02/2024
Map released: 27/03/2024
Last modified: 08/01/2025
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links

EMD-43660

SARS-CoV-2 S RBD (C.37 Lambda variant) plus S309 Fab, local refinement

EMD-43660

Single-particle
3.1 Å
EMD-43660 Deposition: 08/02/2024
Map released: 27/03/2024
Last modified: 08/01/2025
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links
Sample Organism: Severe acute respiratory syndrome coronavirus 2, Homo sapiens
Sample: SARS-CoV-2 S C.37 (Lambda variant) plus S309, S2L20, and S2X303 Fabs
Fitted models: 8vyg (Avg. Q-score: 0.395)

Deposition Authors: McCallum M , Veesler D , Seattle Structural Genomics Center for Infectious Disease (SSGCID)
Quantifying how single dose Ad26.COV2.S vaccine efficacy depends on Spike sequence features.
PUBMED: 38467646
DOI: doi:10.1038/s41467-024-46536-w
ISSN: 2041-1723
Abstract:
In the ENSEMBLE randomized, placebo-controlled phase 3 trial (NCT04505722), estimated single-dose Ad26.COV2.S vaccine efficacy (VE) was 56% against moderate to severe-critical COVID-19. SARS-CoV-2 Spike sequences were determined from 484 vaccine and 1,067 placebo recipients who acquired COVID-19. In this set of prespecified analyses, we show that in Latin America, VE was significantly lower against Lambda vs. Reference and against Lambda vs. non-Lambda [family-wise error rate (FWER) p < 0.05]. VE differed by residue match vs. mismatch to the vaccine-insert at 16 amino acid positions (4 FWER p < 0.05; 12 q-value ≤ 0.20); significantly decreased with physicochemical-weighted Hamming distance to the vaccine-strain sequence for Spike, receptor-binding domain, N-terminal domain, and S1 (FWER p < 0.001); differed (FWER ≤ 0.05) by distance to the vaccine strain measured by 9 antibody-epitope escape scores and 4 NTD neutralization-impacting features; and decreased (p = 0.011) with neutralization resistance level to vaccinee sera. VE against severe-critical COVID-19 was stable across most sequence features but lower against the most distant viruses.