3IZ3

CryoEM structure of cytoplasmic polyhedrosis virus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Atomic model of a cypovirus built from cryo-EM structure provides insight into the mechanism of mRNA capping.

Cheng, L.Sun, J.Zhang, K.Mou, Z.Huang, X.Ji, G.Sun, F.Zhang, J.Zhu, P.

(2011) Proc.Natl.Acad.Sci.USA 108: 1373-1378

  • DOI: 10.1073/pnas.1014995108

  • PubMed Abstract: 
  • The cytoplasmic polyhedrosis virus (CPV) from the family Reoviridae belongs to a subgroup of "turreted" reoviruses, in which the mRNA capping activity occurs in a pentameric turret. We report a full atomic model of CPV built from a 3D density map obt ...

    The cytoplasmic polyhedrosis virus (CPV) from the family Reoviridae belongs to a subgroup of "turreted" reoviruses, in which the mRNA capping activity occurs in a pentameric turret. We report a full atomic model of CPV built from a 3D density map obtained using cryoelectron microscopy. The image data for the 3D reconstruction were acquired exclusively from a CCD camera. Our structure shows that the enzymatic domains of the pentameric turret of CPV are topologically conserved and that there are five unique channels connecting the guanylyltransferase and methyltransferase regions. This structural organization reveals how the channels guide nascent mRNA sequentially to guanylyltransferase, 7-N-methyltransferase, and 2'-O-methyltransferase in the turret, undergoing the highly coordinated mRNA capping activity. Furthermore, by fitting the deduced amino acid sequence of the protein VP5 to 120 large protrusion proteins on the CPV capsid shell, we confirmed that this protrusion protein is encoded by CPV RNA segment 7.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Structural protein VP3
A
1058Bombyx mori cytoplasmic polyhedrosis virusMutation(s): 0 
Find proteins for Q914N6 (Bombyx mori cytoplasmic polyhedrosis virus)
Go to UniProtKB:  Q914N6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Structural protein VP1
B, C
1333Bombyx mori cytoplasmic polyhedrosis virusMutation(s): 0 
Find proteins for Q6TS43 (Bombyx mori cytoplasmic polyhedrosis virus)
Go to UniProtKB:  Q6TS43
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Viral structural protein 5
D, E
291Bombyx mori cytoplasmic polyhedrosis virusMutation(s): 0 
Gene Names: VP5
Find proteins for C6K2M8 (Bombyx mori cytoplasmic polyhedrosis virus)
Go to UniProtKB:  C6K2M8
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.9 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2018-07-18
    Type: Data collection