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Applied and Environmental Microbiology, December 2007, p. 7785-7788, Vol. 73, No. 23
0099-2240/07/$08.00+0     doi:10.1128/AEM.00876-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

CelAB, a Multifunctional Cellulase Encoded by Teredinibacter turnerae T7902T, a Culturable Symbiont Isolated from the Wood-Boring Marine Bivalve Lyrodus pedicellatus{triangledown}

Nathan A. Ekborg,1 Wendy Morrill,2 Adam M. Burgoyne,2 Li Li,2 and Daniel L. Distel1*

Ocean Genome Legacy, Center for Marine Genomic Research and Conservation, 240 County Rd., Ipswich, Massachusetts 01938,1 Department of Biochemistry, Microbiology, and Molecular Biology, University of Maine, 5735 Hitchner Hall, Orono, Maine 044692

Received 18 April 2007/ Accepted 1 October 2007

We characterized a multifunctional cellulase (CelAB) encoded by the endosymbiont Teredinibacter turnerae T7902T. CelAB contains two catalytic and two carbohydrate-binding domains, each separated by polyserine linker regions. CelAB binds cellulose and chitin, degrades multiple complex polysaccharides, and displays two catalytic activities, cellobiohydrolase (EC 3.2.1.91) and ß-1,4(3) endoglucanase (EC 3.2.1.4).

* Corresponding author. Mailing address: Ocean Genome Legacy, 240 County Rd., Ipswich, MA 01938. Phone: (978) 380-7425. Fax: (978) 356-5263. E-mail: distel{at}oglf.org

{triangledown} Published ahead of print on 12 October 2007.

Applied and Environmental Microbiology, December 2007, p. 7785-7788, Vol. 73, No. 23
0099-2240/07/$08.00+0     doi:10.1128/AEM.00876-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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