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Science 14 July 2006:
Vol. 313. no. 5784, pp. 177 - 178
DOI: 10.1126/science.1129761
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Perspectives

BIOCHEMISTRY:
Viral Glycoproteins and an Evolutionary Conundrum

Alasdair C. Steven1 and Patricia G. Spear2

Glycoproteins from two entirely different viruses share the same novel structure, raising intriguing questions about the evolutionary origins of these and other viruses.

1A. C. Steven is at the Laboratory of Structural Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, 50 South Drive, Bethesda, MD 20892, USA. E-mail: stevena{at}mail.nih.gov

2P. G. Spear is at the Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA. E-mail: p-spear{at}northwestern.edu

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