EMD-8977

Single-particle
3.18 Å
EMD-8977 Deposition: 15/07/2018
Map released: 11/09/2019
Last modified: 11/09/2019
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links

EMD-8977

Cryo-EM structure at 3.2 A resolution of HIV-1 fusion peptide-directed antibody, A12V163-b.01, elicited by vaccination of Rhesus macaques, in complex with stabilized HIV-1 Env BG505 DS-SOSIP, which was also bound to antibodies VRC03 and PGT122

EMD-8977

Single-particle
3.18 Å
EMD-8977 Deposition: 15/07/2018
Map released: 11/09/2019
Last modified: 11/09/2019
Overview 3D View Sample Experiment Validation Volume Browser Additional data Links
Sample Organism: Homo sapiens, Human immunodeficiency virus 1, Macaca mulatta
Sample: Quaternary complex of HIV-1 Env BG505 DS-SOSIP with antibodies A12V163-b.01, VRC03 and PGT122.

Deposition Authors: Acharya P, Eng ET, Kwong PD
Antibody Lineages with Vaccine-Induced Antigen-Binding Hotspots Develop Broad HIV Neutralization.
PUBMED: 31348886
DOI: doi:10.1016/j.cell.2019.06.030
ISSN: 1097-4172
Abstract:
The vaccine-mediated elicitation of antibodies (Abs) capable of neutralizing diverse HIV-1 strains has been a long-standing goal. To understand how broadly neutralizing antibodies (bNAbs) can be elicited, we identified, characterized, and tracked five neutralizing Ab lineages targeting the HIV-1-fusion peptide (FP) in vaccinated macaques over time. Genetic and structural analyses revealed two of these lineages to belong to a reproducible class capable of neutralizing up to 59% of 208 diverse viral strains. B cell analysis indicated each of the five lineages to have been initiated and expanded by FP-carrier priming, with envelope (Env)-trimer boosts inducing cross-reactive neutralization. These Abs had binding-energy hotspots focused on FP, whereas several FP-directed Abs induced by immunization with Env trimer-only were less FP-focused and less broadly neutralizing. Priming with a conserved subregion, such as FP, can thus induce Abs with binding-energy hotspots coincident with the target subregion and capable of broad neutralization.