6H3T image
Entry Detail
PDB ID:
6H3T
Keywords:
Title:
Schmallenberg Virus Glycoprotein Gc Head Domain in Complex with scFv 1C11
Biological Source:
PDB Version:
Deposition Date:
2018-07-19
Release Date:
2019-02-27
Method Details:
Experimental Method:
Resolution:
2.84 Å
R-Value Free:
0.26
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Envelopment polyprotein
Chain IDs:C (auth: A), F (auth: B)
Chain Length:248
Number of Molecules:2
Biological Source:Bovine Schmallenberg virus
Polymer Type:polypeptide(L)
Description:scFv 1C11 VH
Chain IDs:A (auth: H), D (auth: I)
Chain Length:140
Number of Molecules:2
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:scFv 1C11 VL
Chain IDs:B (auth: L), E (auth: M)
Chain Length:123
Number of Molecules:2
Biological Source:Mus musculus
Ligand Molecules
Primary Citation
Orthobunyavirus spike architecture and recognition by neutralizing antibodies.
Nat Commun 10 879 879 (2019)
PMID: 30787296 DOI: 10.1038/s41467-019-08832-8

Abstact

Orthobunyaviruses (OBVs) form a distinct genus of arthropod-borne bunyaviruses that can cause severe disease upon zoonotic transmission to humans. Antigenic drift or genome segment re-assortment have in the past resulted in new pathogenic OBVs, making them potential candidates for causing emerging zoonoses in the future. Low-resolution electron cryo-tomography studies have shown that OBV particles feature prominent trimeric spikes, but their molecular organization remained unknown. Here we report X-ray crystallography studies of four different OBVs showing that the spikes are formed by an N-terminal extension of the fusion glycoprotein Gc. Using Schmallenberg virus, a recently emerged OBV, we also show that the projecting spike is the major target of the neutralizing antibody response, and provide X-ray structures in complex with two protecting antibodies. We further show that immunization of mice with the spike domains elicits virtually sterilizing immunity, providing fundamental knowledge essential in the preparation for potential newly emerging OBV zoonoses.

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Primary Citation of related structures