9MID image
Deposition Date 2024-12-12
Release Date 2025-05-28
Last Version Date 2025-06-04
Entry Detail
PDB ID:
9MID
Keywords:
Title:
Crystal structure of the VRC01-class antibody 3G08, derived from GT1.1 vaccination, in complex with eOD-GT8
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.74 Å
R-Value Free:
0.24
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:eOD-GT8 engineered mutant of gp120
Chain IDs:C
Chain Length:183
Number of Molecules:1
Biological Source:Human immunodeficiency virus 1
Polymer Type:polypeptide(L)
Molecule:3G08 Fab Heavy Chain
Chain IDs:A (auth: H)
Chain Length:223
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:3G08 Fab Light Chain
Chain IDs:B (auth: L)
Chain Length:211
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation

Abstact

A protective HIV vaccine will need to induce broadly neutralizing antibodies (bnAbs) in humans, but priming rare bnAb precursor B cells has been challenging. In a double-blinded, placebo-controlled phase 1 human clinical trial, the recombinant, germline-targeting envelope glycoprotein (Env) trimer BG505 SOSIP.v4.1-GT1.1, adjuvanted with AS01B, induced bnAb precursors of the VRC01-class at a high frequency in the majority of vaccine recipients. These bnAb precursors, that target the CD4 receptor binding site, had undergone somatic hypermutation characteristic of the VRC01-class. A subset of isolated VRC01-class monoclonal antibodies neutralized wild-type pseudoviruses and was structurally extremely similar to bnAb VRC01. These results further support germline-targeting approaches for human HIV vaccine design and demonstrate atomic-level manipulation of B cell responses with rational vaccine design.

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Primary Citation of related structures