Nanoporous Crystals of Chicken Embryo Lethal Orphan (CELO) Adenovirus Major Coat Protein, Hexon

Experimental Data Snapshot

  • Resolution: 3.90 Å
  • R-Value Free: 0.416 
  • R-Value Work: 0.372 

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This is version 1.4 of the entry. See complete history


Nanoporous crystals of chicken embryo lethal orphan (CELO) adenovirus major coat protein, hexon.

Xu, L.Benson, S.D.Burnett, R.M.

(2007) J Struct Biol 157: 424-431

  • DOI: https://doi.org/10.1016/j.jsb.2006.08.017
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    CELO (chicken embryo lethal orphan) virus is an avian adenovirus that is being developed as a gene transfer vector. Its trimeric major coat protein (942 residues, 106,709 Da) has 42% sequence identity to human adenovirus type 2 (AdH2) hexon and 45% to AdH5 hexon. For structural studies, the growth of CELO virus has been optimized, and its hexon purified and crystallized. The hexon crystals, the first non-human example, diffract to 3.9 A resolution. Molecular replacement using the AdH5 model was used to identify the location of the CELO hexon within the unit cell. There is one hexon monomer in the asymmetric unit of the trigonal space group P321 (a=b=157.8 A, c=114.2 A, gamma=120 degrees) and the solvent content is 67.8%. The hexons pack in a hexagonal honeycomb so that large approximately 100 A diameter channels run through the entire crystal. This remarkable property of the crystals lends itself to their exploitation as a nanomaterial. Structural studies on CELO will elucidate the differences between avian and human adenoviruses and contribute to a better understanding of adenoviruses with non-human hosts.

  • Organizational Affiliation

    The Wistar Institute, 3601 Spruce Street, Philadelphia, PA 19104, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hexon protein942Fowl aviadenovirus 1Mutation(s): 0 
Find proteins for P42671 (Fowl adenovirus A serotype 1 (strain CELO / Phelps))
Explore P42671 
Go to UniProtKB:  P42671
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42671
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.90 Å
  • R-Value Free: 0.416 
  • R-Value Work: 0.372 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 157.77α = 90
b = 157.77β = 90
c = 114.2γ = 120
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
CrystalCleardata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-02-06
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Advisory, Data collection
  • Version 1.4: 2023-08-30
    Changes: Advisory, Data collection, Database references, Refinement description