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Archaea, 1:19–25
© 2002 Heron Publishing—Victoria, Canada
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Biochemical evidence for the presence of two α-glucoside ABC-transport systems in the hyperthermophilic archaeon Pyrococcus furiosus

Sonja M. Koning (1), Wil N. Konings (1) and Arnold J. M. Driessen (1, 2)

1. Department of Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, P. O. Box 14, 9750 AA Haren, The Netherlands / 2. Author to whom correspondence should be addressed ([email protected]) / Received June 14, 2001; accepted September 14, 2001; published online October 11, 2001

Summary

The hyperthermophilic archaeon Pyrococcus furiosus can utilize different carbohydrates, such as starch, maltose and trehalose. Uptake of α-glucosides is mediated by two different, binding protein-dependent, ATP-binding cassette (ABC)-type transport systems. The maltose transporter also transports trehalose, whereas the maltodextrin transport system mediates the uptake of maltotriose and higher malto-oligosaccharides, but not maltose. Both transport systems are induced during growth on their respective substrates.

Keywords: binding protein, maltodextrin, maltose.


 ISSN 1472-3654 (Online) ISSN 1472-3646 (Print) Copyright © 2002–2007 Heron Publishing