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J. Bacteriol. doi:10.1128/JB.00042-07
Copyright (c) 2007, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved.

Flagellar motility and structure in the hyperthermoacidophilic archaeon Sulfolobus solfataricus

Department of Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands; Department of Biophysical Chemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands; Beadle Center for Genetics, University of Nebraska-Lincoln, Lincoln, NB 68588-0666, USA

^* To whom correspondence should be addressed. Email: a.j.m.driessen{at}rug.nl.

	Abstract

Flagellation in archaea is widespread and is involved in swimming motility. Here we demonstrate that the structural flagellin gene from the crenarchaeaon Sulfolobus solfataricusis is highly expressed in stationary grown cells and nutritional unfavorable conditions. A mutant in a flagellar auxiliary gene, flaJ, was found to be non-motile. Electron microscopic imaging of the flagellum indicates that the filaments are composed of right-handed helices.

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