ISDA: 4UIH

Deposition Date 2015-03-30

Release Date 2015-07-15

Last Version Date 2024-05-08

Entry Detail

PDB ID:

4UIH

Keywords:

VIRAL PROTEIN

Title:

Cryo-EM structure of Dengue virus serotype 2 strain New Guinea-C complexed with human antibody 2D22 Fab at 37 degree C. The Fab molecules were added to the virus before 37 degree C incubation.

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:

20.00 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:DENGUE VIRUS SEROTYPE 2 STRAIN NEW GUINEA-C E PROTEIN ECTODOMAIN
Chain IDs:A, B, C
Chain Length:495
Number of Molecules:3
Biological Source:DENGUE VIRUS 2

UniProt ID:P14340 Pfam ID:PF00869, PF02832, PF21659

Polymer Type:polypeptide(L)
Molecule:ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 -HEAVY CHAIN
Chain IDs:D, F
Chain Length:128
Number of Molecules:2
Biological Source:HOMO SAPIENS

Polymer Type:polypeptide(L)
Molecule:ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 -LIGHT CHAIN
Chain IDs:E, G
Chain Length:115
Number of Molecules:2
Biological Source:HOMO SAPIENS

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.

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Primary Citation of related structures