5MQC

Structure of black queen cell virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Work: 0.247 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Virion Structure of Black Queen Cell Virus, a Common Honeybee Pathogen.

Spurny, R.Pridal, A.Palkova, L.Kiem, H.K.de Miranda, J.R.Plevka, P.

(2017) J. Virol. 91: --

  • DOI: 10.1128/JVI.02100-16

  • PubMed Abstract: 
  • Viral diseases are a major threat to honeybee (Apis mellifera) populations worldwide and therefore an important factor in reliable crop pollination and food security. Black queen cell virus (BQCV) is the etiological agent of a fatal disease of honeyb ...

    Viral diseases are a major threat to honeybee (Apis mellifera) populations worldwide and therefore an important factor in reliable crop pollination and food security. Black queen cell virus (BQCV) is the etiological agent of a fatal disease of honeybee queen larvae and pupae. The virus belongs to the genus Triatovirus from the family Dicistroviridae, which is part of the order Picornavirales Here we present a crystal structure of BQCV determined to a resolution of 3.4 Å. The virion is formed by 60 copies of each of the major capsid proteins VP1, VP2, and VP3; however, there is no density corresponding to a 75-residue-long minor capsid protein VP4 encoded by the BQCV genome. We show that the VP4 subunits are present in the crystallized virions that are infectious. This aspect of the BQCV virion is similar to that of the previously characterized triatoma virus and supports the recent establishment of the separate genus Triatovirus within the family Dicistroviridae The C terminus of VP1 and CD loops of capsid proteins VP1 and VP3 of BQCV form 34-Å-tall finger-like protrusions at the virion surface. The protrusions are larger than those of related dicistroviruses.IMPORTANCE The western honeybee is the most important pollinator of all, and it is required to sustain the agricultural production and biodiversity of wild flowering plants. However, honeybee populations worldwide are suffering from virus infections that cause colony losses. One of the most common, and least known, honeybee pathogens is black queen cell virus (BQCV), which at high titers causes queen larvae and pupae to turn black and die. Here we present the three-dimensional virion structure of BQCV, determined by X-ray crystallography. The structure of BQCV reveals large protrusions on the virion surface. Capsid protein VP1 of BQCV does not contain a hydrophobic pocket. Therefore, the BQCV virion structure provides evidence that capsid-binding antiviral compounds that can prevent the replication of vertebrate picornaviruses may be ineffective against honeybee virus infections.


    Organizational Affiliation

    Structural Virology, Central European Institute of Technology, Masaryk University, Brno, Czech Republic.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VP1
A
280Black queen cell virusMutation(s): 0 
Gene Names: orf2
Find proteins for Q9J7C2 (Black queen cell virus)
Go to UniProtKB:  Q9J7C2
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
VP3
C
267Black queen cell virusMutation(s): 0 
Gene Names: orf2
Find proteins for Q9J7C2 (Black queen cell virus)
Go to UniProtKB:  Q9J7C2
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
VP2
B
231Black queen cell virusMutation(s): 0 
Gene Names: orf2
Find proteins for Q9J7C2 (Black queen cell virus)
Go to UniProtKB:  Q9J7C2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Work: 0.247 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 332.914α = 90.00
b = 350.962β = 90.00
c = 362.540γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Regional Development FundCzech RepublicCZ.1.05/1.1.00/02.0070

Revision History 

  • Version 1.0: 2017-01-25
    Type: Initial release
  • Version 1.1: 2017-03-15
    Type: Database references