2R18 image
Deposition Date 2007-08-22
Release Date 2008-02-05
Last Version Date 2024-02-21
Entry Detail
PDB ID:
2R18
Keywords:
Title:
Structural insights into the multifunctional protein VP3 of Birnaviruses
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.30 Å
R-Value Free:
0.26
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 41 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Capsid assembly protein VP3
Chain IDs:A
Chain Length:139
Number of Molecules:1
Biological Source:Infectious bursal disease virus
Primary Citation
Structural insights into the multifunctional protein VP3 of birnaviruses.
Structure 16 29 37 (2008)
PMID: 18184581 DOI: 10.1016/j.str.2007.10.023

Abstact

Infectious bursal disease virus (IBDV), a member of the Birnaviridae family, is the causative agent of one of the most harmful poultry diseases. The IBDV genome encodes five mature proteins; of these, the multifunctional protein VP3 plays an essential role in virus morphogenesis. This protein, which interacts with the structural protein VP2, with the double-stranded RNA genome, and with the virus-encoded, RNA-dependent RNA polymerase, VP1, is involved not only in the formation of the viral capsid, but also in the recruitment of VP1 into the capsid and in the encapsidation of the viral genome. Here, we report the X-ray structure of the central region of VP3, residues 92-220, consisting of two alpha-helical domains connected by a long and flexible hinge that are organized as a dimer. Unexpectedly, the overall fold of the second VP3 domain shows significant structural similarities with different transcription regulation factors.

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Primary Citation of related structures