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Applied and Environmental Microbiology, October 2006, p. 6851-6853, Vol. 72, No. 10
0099-2240/06/$08.00+0     doi:10.1128/AEM.01209-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Essentiality of a Newly Identified Carbohydrate-Binding Module for the Function of CelB (BH0603) from the Alkaliphilic Bacterium Bacillus halodurans{triangledown}

Benson Munyali Wamalwa,1,2 Makiko Sakka,1 Paul Mwanza Shiundu,2 Kunio Ohmiya,1 Tetsuya Kimura,1 and Kazuo Sakka1*

Applied Microbiology Laboratory, Faculty of Bioresources, Mie University, 1577 Kurimamachiyacho, Tsu 514-8507, Japan,1 Analytical Chemistry Laboratory, Department of Chemistry, University of Nairobi, P.O. Box 30197, Nairobi, Kenya2

Received 24 May 2006/ Accepted 12 August 2006

CelB (BH0603) from Bacillus halodurans is a modular glycoside hydrolase with a family 5 catalytic module, an immunoglobulin-like module, and module PfamB of unknown function. The recombinant PfamB module bound to Avicel and was essential for CelB hydrolytic function. We propose that module PfamB be designated a new carbohydrate-binding module.

* Corresponding author. Mailing address: Applied Microbiology Laboratory, Faculty of Bioresources, Mie University, 1577 Kurimamachiyacho, Tsu 514-8507, Japan. Phone: 81-59-231-9621. Fax: 81-59-231-9684. E-mail: sakka{at}bio.mie-u.ac.jp.

{triangledown} Published ahead of print on 1 September 2006.

Applied and Environmental Microbiology, October 2006, p. 6851-6853, Vol. 72, No. 10
0099-2240/06/$08.00+0     doi:10.1128/AEM.01209-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.





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