4UIF image
Deposition Date 2015-03-30
Release Date 2015-07-15
Last Version Date 2024-05-08
Entry Detail
PDB ID:
4UIF
Keywords:
VIRAL PROTEIN
Title:
Cryo-EM structure of Dengue virus serotype 2 in complex with antigen-binding fragments of human antibody 2D22
Biological Source:
Source Organism:
DENGUE VIRUS 2 (Taxon ID: 11060)
HOMO SAPIENS (Taxon ID: 9606)
Host Organism:
AEDES ALBOPICTUS
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
6.50 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
4UIF validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DENGUE VIRUS SEROTYPE 2 STRAIN PVP94 07 - ENVELOPE PROTEIN
Chain IDs:A, C, E
Chain Length:495
Number of Molecules:3
Biological Source:DENGUE VIRUS 2
UniProt ID:E0WXJ2 Pfam ID:PF00869, PF02832, PF21659, PF01004
Protein Blast
Polymer Type:polypeptide(L)
Molecule:DENGUE VIRUS SEROTYPE 2 STRAIN STRAIN PVP94 07 - MEMBRANE PROTEIN
Chain IDs:B, D, F
Chain Length:72
Number of Molecules:3
Biological Source:DENGUE VIRUS 2
UniProt ID:E0WXJ2 Pfam ID:PF00869, PF02832, PF21659, PF01004
Polymer Type:polypeptide(L)
Molecule:ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 - HEAVY CHAIN
Chain IDs:G, I, K
Chain Length:128
Number of Molecules:3
Biological Source:HOMO SAPIENS
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 - LIGHT CHAIN
Chain IDs:H, J, L
Chain Length:115
Number of Molecules:3
Biological Source:HOMO SAPIENS
UniProt ID:S6BGD6 Pfam ID:PF07686
Ligand Molecules
NA
Primary Citation
Cryo-EM structure of an antibody that neutralizes dengue virus type 2 by locking E protein dimers.
Science 349 88 91 (2015)
PMID: 26138979 DOI: 10.1126/science.aaa8651

Abstact

There are four closely-related dengue virus (DENV) serotypes. Infection with one serotype generates antibodies that may cross-react and enhance infection with other serotypes in a secondary infection. We demonstrated that DENV serotype 2 (DENV2)-specific human monoclonal antibody (HMAb) 2D22 is therapeutic in a mouse model of antibody-enhanced severe dengue disease. We determined the cryo-electron microscopy (cryo-EM) structures of HMAb 2D22 complexed with two different DENV2 strains. HMAb 2D22 binds across viral envelope (E) proteins in the dimeric structure, which probably blocks the E protein reorganization required for virus fusion. HMAb 2D22 "locks" two-thirds of or all dimers on the virus surface, depending on the strain, but neutralizes these DENV2 strains with equal potency. The epitope defined by HMAb 2D22 is a potential target for vaccines and therapeutics.

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Primary Citation of related structures
4UIH