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Applied and Environmental Microbiology, May 2001, p. 2380-2383, Vol. 67, No. 5
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.5.2380-2383.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.

The celA Gene, Encoding a Glycosyl Hydrolase Family 3 beta -Glucosidase in Azospirillum irakense, Is Required for Optimal Growth on Cellobiosides

Denis Faure,1,2 Bernard Henrissat,3 David Ptacek,1 My Ali Bekri,1 and Jos Vanderleyden1,*

F. A. Janssens Laboratory of Genetics, Katholieke Universiteit Leuven, B-3001 Heverlee, Belgium,1 and Laboratoire de Plasticité et Expression des Génomes Microbiens, CNRS EP2029, CEA LRC12, Université J. Fourier, F-38041 Grenoble Cedex 9,2 and Architecture et Fonction des Macromolécules Biologiques, CNRS, F-13402 Marseille Cedex 20,3 France

Received 7 November 2000/Accepted 18 February 2001

The CelA beta -glucosidase of Azospirillum irakense, belonging to glycosyl hydrolase family 3 (GHF3), preferentially hydrolyzes cellobiose and releases glucose units from the C3, C4, and C5 oligosaccharides. The growth of a Delta celA mutant on these cellobiosides was affected. In A. irakense, the GHF3 beta -glucosidases appear to be functional alternatives for the GHF1 beta -glucosidases in the assimilation of beta -glucosides by other bacteria.

* Corresponding author. Mailing address: F. A. Janssens Laboratory of Genetics, Katholieke Universiteit Leuven, K. Mercierlaan 92, B-3001 Heverlee, Belgium. Phone: (32) 16 32 16 31. Fax: (32) 16 32 19 66. E-mail: Jozef.vanderleyden{at}agr.kuleuven.ac.be.

Applied and Environmental Microbiology, May 2001, p. 2380-2383, Vol. 67, No. 5
0099-2240/01/$04.00+0   DOI: 10.1128/AEM.67.5.2380-2383.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • Dodd, D., Kocherginskaya, S. A., Spies, M. A., Beery, K. E., Abbas, C. A., Mackie, R. I., Cann, I. K. O. (2009). Biochemical Analysis of a {beta}-D-Xylosidase and a Bifunctional Xylanase-Ferulic Acid Esterase from a Xylanolytic Gene Cluster in Prevotella ruminicola 23. J. Bacteriol. 191: 3328-3338 [Abstract] [Full Text]  
  • Faure, D. (2002). The Family-3 Glycoside Hydrolases: from Housekeeping Functions to Host-Microbe Interactions. Appl. Environ. Microbiol. 68: 1485-1490 [Full Text]  


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