2JJL

Structure of avian reovirus sigmaC117-326, P321 crystal form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystallographic structure of the alpha-helical triple coiled-coil domain of avian reovirus S1133 fibre.

Guardado-Calvo, P.Fox, G.C.Llamas-Saiz, A.L.van Raaij, M.J.

(2009) J. Gen. Virol. 90: 672-677

  • DOI: 10.1099/vir.0.008276-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Avian reovirus fibre, a homo-trimer of the sigmaC protein, is a minor component of the avian reovirus outer capsid. It is anchored via a short N-terminal sequence to the inner capsid lambdaC pentamer, and its protruding globular C-terminal domain is ...

    Avian reovirus fibre, a homo-trimer of the sigmaC protein, is a minor component of the avian reovirus outer capsid. It is anchored via a short N-terminal sequence to the inner capsid lambdaC pentamer, and its protruding globular C-terminal domain is responsible for primary host cell attachment. We have previously solved the structure of a receptor-binding fragment in which residues 160-191 form a triple beta-spiral and 196-326 a beta-barrel head domain. Here we have expressed, purified and crystallized a major sigmaC fragment comprising residues 117-326. Its structure, which was solved by molecular replacement using the previously determined receptor-binding domain structure and refined to 1.75 A (0.175 nm) resolution, reveals an alpha-helical triple coiled-coil connected to the previously solved structure by a zinc-ion-containing linker. The coiled-coil domain contains two chloride ion binding sites, as well as specific trimerization and registration sequences. The linker may act as a functionally important hinge.


    Related Citations: 
    • Crystallization of the C-Terminal Globular Domain of Avian Reovirus Fibre.
      van Raaij, M.J.,Hermo-Parrado, X.L.,Guardado-Calvo, P.,Fox, G.C.,Llamas-Saiz, A.L.,Costas, C.,Martinez-Costas, J.,Benavente, J.
      (2005) Acta Crystallogr., Sect.F 61: 651
    • Structure of the Carboxy-Terminal Receptor-Binding Domain of Avian Reovirus Fibre Sigmac.
      Guardado-Calvo, P.,Fox, G.C.,Hermo-Parrado, X.L.,Llamas-Saiz, A.L.,Costas, C.,Martinez-Costas, J.,Benavente, J.,van Raaij, M.J.
      (2005) J.Mol.Biol. 354: 137


    Organizational Affiliation

    Departamento de Bioquímica e Bioloxía Molecular, Facultade de Farmacia, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SIGMA-C CAPSID PROTEIN
A
211Avian reovirus (strain S1133)Mutation(s): 0 
Find proteins for Q992I2 (Avian reovirus (strain S1133))
Go to UniProtKB:  Q992I2
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.181 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 77.657α = 90.00
b = 77.657β = 90.00
c = 121.449γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOLREPphasing
HKL-2000data reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-01-13
    Type: Initial release
  • Version 1.1: 2011-05-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-02-07
    Type: Database references