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Science 13 January 2006:
Vol. 311. no. 5758, pp. 182 - 183
DOI: 10.1126/science.1123754
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Perspectives

STRUCTURAL BIOLOGY:
Two Geometric Solutions to a Transporting Problem

Corinne Smith

Cage-like protein assemblies envelop vesicles that carry materials from place to place in a cell. By changing the geometry of these cages, cells can transport a range of cargo sizes.

The author is in the Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK. E-mail: corinne.smith{at}warwick.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)