Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 319647.75 
• Atom Count: 21813 
• Residue Count: 2796 
• Unique protein chains: 1

2OBE

Crystal Structure of Chimpanzee Adenovirus (Type 68/Simian 25) Major Coat Protein Hexon

• DOI: 10.2210/pdb2OBE/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Simian adenovirus 25


• Deposited: 2006-12-18 Released: 2007-07-24 
• Deposition Author(s): Xue, F., Rux, J.J., Burnett, R.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.210 
• R-Value Work: 0.169 

Literature

Structure-based identification of a major neutralizing site in an adenovirus hexon

Pichla-Gollon, S.L., Drinker, M., Zhou, X., Xue, F., Rux, J.J., Gao, G.-P., Wilson, J.M., Ertl, H.C.J., Burnett, R.M., Bergelson, J.M.

(2007) J.Virol. 81: 1680-1689

• PubMed: 17108028 
• DOI: 10.1128/JVI.02023-06


• PubMed Abstract: 
  

Virus-specific neutralizing antibodies present an obstacle to the effective use of adenovirus vectors for gene therapy and vaccination. The specific sites recognized by neutralizing antibodies have not been identified for any adenovirus, but they have been proposed to reside within the hexon, in small regions of the molecule that are exposed on the capsid surface and possess sequences that vary among serotypes. We have mapped the epitopes recognized by a panel of seven hexon-specific monoclonal antibodies that neutralize the chimpanzee adenovirus 68 (AdC68). Surface plasmon resonance experiments revealed that the antibodies compete for a single hexon binding site, and experiments with synthetic peptides indicated that this site resides within just one small surface loop. Mutations within this loop (but not in other surface loops) permitted virus to escape neutralization by all seven monoclonal antibodies and to resist neutralization by polyclonal antisera obtained from animals immunized against AdC68. These results indicate that a single small surface loop defines a major neutralization site for AdC68 hexon.

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Related Citations: 

• Capsid-like arrays in crystals of chimpanzee adenovirus hexon
  Xue, F.,Burnett, R.M.
  (2006) J.Struct.Biol. 154: 217




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Organizational Affiliation: 

Abramson Research Center, Room 1205G, Immunologic and Infectious Disease, The Children's Hospital of Philadelphia, 3601 Civic Center Blvd., Pennsylvania, PA 19104, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Hexon protein	A, B, C	932	Simian adenovirus 25	Mutation(s): 0  Gene Names: L3
Find proteins for Q8UY79 (Simian adenovirus 25) Go to UniProtKB:  Q8UY79

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
2HP	A, B, C	DIHYDROGENPHOSPHATE ION H2 O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-M
MPD	A, B, C	(4S)-2-METHYL-2,4-PENTANEDIOL C6 H14 O2 SVTBMSDMJJWYQN-YFKPBYRVSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.210 
• R-Value Work: 0.169 
• Space Group: C 2 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 90.800	α = 90.00
b = 433.000	β = 90.00
c = 159.300	γ = 90.00

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
HKL-2000	data collection
CNS	phasing
PDB_EXTRACT	data extraction
SCALEPACK	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-12-18 
• Released Date: 2007-07-24 
• Deposition Author(s): Xue, F., Rux, J.J., Burnett, R.M.

Revision History 

• Version 1.0: 2007-07-24
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.3: 2017-10-18
  Type: Advisory, Refinement description
• Version 2.0: 2019-02-06
  Type: Data collection, Database references, Non-polymer description, Refinement description, Source and taxonomy, Structure summary