7V3H image
Entry Detail
PDB ID:
7V3H
EMDB ID:
EMD-31679
Keywords:
VIRUS/IMMUNE SYSTEM
Title:
DENV2_NGC_Fab_C10 28degrees (3Fab:3E)
Biological Source:
Source Organism:
Dengue virus type 2 (strain Thailand/NGS-C/1944), Homo sapiens
Host Organism:
Aedes albopictus C6/36 cell densovirus
PDB Version:
Deposition Date:
2021-08-10
Release Date:
2021-12-29
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.60 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7V3H validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:Envelope protein E
Chain IDs:A (auth: B), C (auth: A), E (auth: C)
Chain Length:495
Number of Molecules:3
Biological Source:Dengue virus type 2 (strain Thailand/NGS-C/1944)
UniProt ID:P14340 Pfam ID:PF00869, PF02832, PF21659, PF01004
Protein Blast
Polymer Type:polypeptide(L)
Description:Small envelope protein M
Chain IDs:B (auth: E), D, F
Chain Length:72
Number of Molecules:3
Biological Source:Dengue virus type 2 (strain Thailand/NGS-C/1944)
UniProt ID:P14340 Pfam ID:PF00869, PF02832, PF21659, PF01004
Polymer Type:polypeptide(L)
Description:C10 IgG light chain variable region
Chain IDs:G (auth: I), I (auth: G), K
Chain Length:127
Number of Molecules:3
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:C10 IgG heavy chain variable region
Chain IDs:H (auth: M), J (auth: H), L
Chain Length:109
Number of Molecules:3
Biological Source:Homo sapiens
Ligand Molecules
NAG
Primary Citation
Human antibody C10 neutralizes by diminishing Zika but enhancing dengue virus dynamics.
Cell 184 6067 6080.e13 (2021)
PMID: 34852238 DOI: 10.1016/j.cell.2021.11.009

Abstact

The human monoclonal antibody (HmAb) C10 potently cross-neutralizes Zika virus (ZIKV) and dengue virus. Analysis of antibody fragment (Fab) C10 interactions with ZIKV and dengue virus serotype 2 (DENV2) particles by cryoelectron microscopy (cryo-EM) and amide hydrogen/deuterium exchange mass spectrometry (HDXMS) shows that Fab C10 binding decreases overall ZIKV particle dynamics, whereas with DENV2, the same Fab causes increased dynamics. Testing of different Fab C10:DENV2 E protein molar ratios revealed that, at higher Fab ratios, especially at saturated concentrations, the Fab enhanced viral dynamics (detected by HDXMS), and observation under cryo-EM showed increased numbers of distorted particles. Our results suggest that Fab C10 stabilizes ZIKV but that with DENV2 particles, high Fab C10 occupancy promotes E protein dimer conformational changes leading to overall increased particle dynamics and distortion of the viral surface. This is the first instance of a broadly neutralizing antibody eliciting virus-specific increases in whole virus particle dynamics.

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Primary Citation of related structures
7V3H