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Genetic and biochemical characterization of a highly thermostable alpha-L-arabinofuranosidase from Thermobacillus xylanilyticus.


ABSTRACT: The gene encoding an alpha-L-arabinofuranosidase from Thermobacillus xylanilyticus D3, AbfD3, was isolated. Characterization of the purified recombinant alpha-L-arabinofuranosidase produced in Escherichia coli revealed that it is highly stable with respect to both temperature (up to 90 degrees C) and pH (stable in the pH range 4 to 12). On the basis of amino acid sequence similarities, this 56, 071-Da enzyme could be assigned to family 51 of the glycosyl hydrolase classification system. However, substrate specificity analysis revealed that AbfD3, unlike the majority of F51 members, displays high activity in the presence of polysaccharides.

SUBMITTER: Debeche T 

PROVIDER: S-EPMC92053 | biostudies-literature | 2000 Apr

REPOSITORIES: biostudies-literature

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Genetic and biochemical characterization of a highly thermostable alpha-L-arabinofuranosidase from Thermobacillus xylanilyticus.

Debeche T T   Cummings N N   Connerton I I   Debeire P P   O'Donohue M J MJ  

Applied and environmental microbiology 20000401 4


The gene encoding an alpha-L-arabinofuranosidase from Thermobacillus xylanilyticus D3, AbfD3, was isolated. Characterization of the purified recombinant alpha-L-arabinofuranosidase produced in Escherichia coli revealed that it is highly stable with respect to both temperature (up to 90 degrees C) and pH (stable in the pH range 4 to 12). On the basis of amino acid sequence similarities, this 56, 071-Da enzyme could be assigned to family 51 of the glycosyl hydrolase classification system. However,  ...[more]

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