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Beta-D-xylosidases are hemilcellulases that hydrolyze short xylooligosaccharides into xylose units. Here, we describe the characterization and kinetic analysis of a family 43 beta-xylosidase from Geobacillus stearothermophilus T-6 (XynB3). Enzymes in this family use an inverting single-displacement mechanism with two conserved carboxylic acids, a general(More)
The oligomeric organization of enzymes plays an important role in many biological processes, such as allosteric regulation, conformational stability and thermal stability. ␣-Glucuronidases are family 67 glycosi-dases that cleave the ␣-1,2-glycosidic bond between 4-O-methyl-D-glucuronic acid and xylose units as part of an array of hemicellulose-hydrolyzing(More)
Alpha-D-glucuronidases cleave the alpha-1,2-glycosidic bond of the 4-O-methyl-D-glucuronic acid side chain of xylan, as a part of an array of xylan hydrolyzing enzymes. The alpha-D-glucuronidase from Bacillus stearothermophilus T-6 was overexpressed in Escherichia coli using the T7 polymerase expression system. The purification procedure included two steps,(More)
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