2IUN

Structure of the C-terminal head domain of the avian adenovirus CELO long fibre (P21 crystal form)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.153 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structure of the C-terminal head domain of the fowl adenovirus type 1 long fiber.

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

(2007) J. Gen. Virol. 88: 2407-2416

  • DOI: 10.1099/vir.0.82845-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Avian adenovirus CELO (chicken embryo lethal orphan virus, fowl adenovirus type 1) incorporates two different homotrimeric fiber proteins extending from the same penton base: a long fiber (designated fiber 1) and a short fiber (designated fiber 2). T ...

    Avian adenovirus CELO (chicken embryo lethal orphan virus, fowl adenovirus type 1) incorporates two different homotrimeric fiber proteins extending from the same penton base: a long fiber (designated fiber 1) and a short fiber (designated fiber 2). The short fibers extend straight outwards from the viral vertices, whilst the long fibers emerge at an angle. In contrast to the short fiber, which binds an unknown avian receptor and has been shown to be essential to the invasiveness of this virus, the long fiber appears to be unnecessary for infection in birds. Both fibers contain a short N-terminal virus-binding peptide, a slender shaft domain and a globular C-terminal head domain; the head domain, by analogy with human adenoviruses, is likely to be involved mainly in receptor binding. This study reports the high-resolution crystal structure of the head domain of the long fiber, solved using single isomorphous replacement (using anomalous signal) and refined against data at 1.6 A (0.16 nm) resolution. The C-terminal globular head domain had an anti-parallel beta-sandwich fold formed by two four-stranded beta-sheets with the same overall topology as human adenovirus fiber heads. The presence in the sequence of characteristic repeats N-terminal to the head domain suggests that the shaft domain contains a triple beta-spiral structure. Implications of the structure for the function and stability of the avian adenovirus long fiber protein are discussed; notably, the structure suggests a different mode of binding to the coxsackievirus and adenovirus receptor from that proposed for the human adenovirus fiber heads.


    Related Citations: 
    • The Avian Adenovirus Penton: Two Fibres and One Base.
      Hess, M.,Cuzange, A.,Ruigrok, R.W.,Chroboczek, J.,Jacrot, B.
      (1995) J.Mol.Biol. 252: 379
    • Crystallization of the C-Terminal Head Domain of the Avian Adenovirus Celo Long Fibre
      Guardado-Calvo, P.,Llamas-Saiz, A.L.,Langlois, P.,van Raaij, M.J.
      (2006) Acta Crystallogr., Sect.F 62: 449
    • The Complete DNA Sequence and Genomic Organization of the Avian Adenovirus Celo.
      Chiocca, S.,Kurzbauer, R.,Schaffner, G.,Baker, A.,Mautner, V.,Cotten, M.
      (1996) J.Virol. 70: 2939


    Organizational Affiliation

    Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Santiago de Compostela, Campus Sur, E-15782 Santiago de Compostela, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
AVIAN ADENOVIRUS CELO LONG FIBRE
A, B, C, D, E, F
248Fowl adenovirus A serotype 1 (strain CELO / Phelps)Mutation(s): 0 
Find proteins for Q64761 (Fowl adenovirus A serotype 1 (strain CELO / Phelps))
Go to UniProtKB:  Q64761
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.153 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 55.960α = 90.00
b = 107.864β = 93.63
c = 114.833γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
AMoREphasing
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-06-19
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-07-05
    Type: Data collection
  • Version 1.4: 2018-02-07
    Type: Database references, Structure summary