ISDA

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, HOMO SAPIENS

Host Organism:

AEDES ALBOPICTUS

PDB Version:

Deposition Date:

2015-03-30

Release Date:

2015-07-15

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

6.50 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description: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)
Description: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)
Description: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)
Description: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

Primary Citation

Cryo-EM structure of an antibody that neutralizes dengue virus type 2 by locking E protein dimers.

Fibriansah, G, Ibarra, K.D, Ng, T.S, Smith, S.A, Tan, J.L, Lim, X.N, Ooi, J.S, Kostyuchenko, V.A, Wang, J, de Silva, A.M, Harris, E, Crowe, J.E, Lok, S.M.Show

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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures