Molecule of the Month: Adenovirus
Adenovirus has an icosahedral capsid with unusual cell-binding fibers
The Adenovirus Capsid
Exploring the Structure
Adenovirus Fiber Interactions (PDB entries 1kac, 2o39 and 1qiu)
The end of each adenovirus fiber forms a knob that binds to the cellular receptor. Several structures of adenovirus and its cellular receptors have been solved, including the complex of the fiber knob with CAR (PDB entry 1kac ) and the complex with CD46 (PDB entry 2o39 ). In both cases, three copies of the receptor protein bind in the grooves between subunits in the fiber knob. To take a closer look at this interaction, click on the images here for an interactive jmol.
Topics for Further Discussion
- Several other adenovirus proteins are available in the PDB: what are their functions in the viral lifecycle?
- Crystal structures for the purified hexons and pentons were solved before the structure of the entire capsid was available. Can you find them in the PDB? Notice that the purified pentons form an unusual mini-capsid.
Related PDB-101 Resources
- Browse Viruses
- Browse Nanotechnology
- J. J. Rux and R. M. Burnett (2004) Adenovirus structure. Human Gene Therapy 15, 1167-1176.
- W. Wu and G. R. Nemerow (2004) Virus yoga: the role of flexibility in virus host cell recognition. Trends in Microbiology 12, 162-169.
- M. A. F. V. Goncalves and A. A. F. deVries (2006) Adenovirus: from foe to friend. Review of Medical Virology 16, 167-186.
- L. S. Young, P. F. Searle, D. Onion and V. Mautner (2006) Viral gene therapy strageies: from basic science to clinical application. Journal of Pathology 208, 299-318.
December 2010, David Goodsellhttp://doi.org/10.2210/rcsb_pdb/mom_2010_12