7V3J image
Deposition Date 2021-08-10
Release Date 2021-12-29
Last Version Date 2024-06-12
Entry Detail
PDB ID:
7V3J
Keywords:
IMMUNE SYSTEM/VIRUS
Title:
DENV2:F(ab')2-local
Biological Source:
Source Organism(s):
Homo sapiens (Taxon ID: 9606)
Dengue virus type 2 (strain Thailand/NGS-C/1944) (Taxon ID: 11065)
Expression System(s):
Homo sapiens, Aedes albopictus c6/36 cell densovirus
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
4.90 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7V3J validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Envelope protein E
Chain IDs:E (auth: B), G (auth: A), I (auth: C), K (auth: P), M (auth: O), O (auth: Q)
Chain Length:495
Number of Molecules:6
Biological Source:Dengue virus type 2 (strain Thailand/NGS-C/1944)
UniProt ID:P14340 Pfam ID:PF02832, PF21659, PF01004, PF00869
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Small envelope protein M
Chain IDs:F (auth: E), H (auth: D), J (auth: F), L (auth: S), N (auth: R), P (auth: T)
Chain Length:72
Number of Molecules:6
Biological Source:Dengue virus type 2 (strain Thailand/NGS-C/1944)
UniProt ID:P14340 Pfam ID:PF02832, PF21659, PF01004, PF00869
Polymer Type:polypeptide(L)
Molecule:Fab_C10_heavy_chain
Chain IDs:A (auth: H), D (auth: I)
Chain Length:237
Number of Molecules:2
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Fab_C10_light_chain
Chain IDs:B (auth: L), C (auth: M)
Chain Length:214
Number of Molecules:2
Biological Source:Homo sapiens
Ligand Molecules
NA
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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Disease

Primary Citation of related structures
7V3J
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