Abstract
The extreme thermoacidophilic archaeon Sulfolobus solfataricus grows optimally at 80°C and pH 3 and uses a variety of sugars as sole carbon and energy source. Glucose transport in this organism is mediated by a high‐affinity binding protein‐dependent ATP‐binding cassette (ABC) transporter. Sugar‐binding studies revealed the presence of four additional membrane‐bound binding proteins for arabinose, cellobiose, maltose and trehalose. These glycosylated binding proteins are subunits of ABC transporters that fall into two distinct groups: (i) monosaccharide transporters that are homologous to the sugar transport family containing a single ATPase and a periplasmic‐binding protein that is processed at an unusual site at its amino‐terminus; (ii) di‐ and oligosaccharide transporters, which are homologous to the family of oligo/dipeptide transporters that contain two different ATPases, and a binding protein that is synthesized with a typical bacterial signal sequence. The latter family has not been implicated in sugar transport before. These data indicate that binding protein‐dependent transport is the predominant mechanism of transport for sugars in S. solfataricus.
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Dates
Type | When |
---|---|
Created | 22 years, 5 months ago (March 12, 2003, 6:36 a.m.) |
Deposited | 1 year, 10 months ago (Oct. 17, 2023, 3:50 a.m.) |
Indexed | 2 months, 1 week ago (June 27, 2025, 6:13 a.m.) |
Issued | 24 years, 6 months ago (March 1, 2001) |
Published | 24 years, 6 months ago (March 1, 2001) |
Published Online | 17 years, 2 months ago (July 7, 2008) |
Published Print | 24 years, 6 months ago (March 1, 2001) |
@article{Elferink_2001, title={Sugar transport in Sulfolobus solfataricus is mediated by two families of binding protein‐dependent ABC transporters}, volume={39}, ISSN={1365-2958}, url={http://dx.doi.org/10.1046/j.1365-2958.2001.02336.x}, DOI={10.1046/j.1365-2958.2001.02336.x}, number={6}, journal={Molecular Microbiology}, publisher={Wiley}, author={Elferink, Marieke G. L. and Albers, Sonja‐V. and Konings, Wil N. and Driessen, Arnold J. M.}, year={2001}, month=mar, pages={1494–1503} }