EC Number   |
Natural Substrates |
|---|
   3.2.1.139 | 1,2-linked glucuronic acid of non-reducing xylose-oligosaccahrides + H2O |
hemicellulose consists mostly of xylan, a polymer of beta-1,4-linked xylose residues, and has among others side chains of glucuronic acid, attached by 1,2-glycosidic bonds |
| 3.2.1.139 | more |
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| 3.2.1.139 | more |
enzyme is involved in hydrolysis of wood xylans |
| 3.2.1.139 | more |
important enzyme for the utilization of substituted xylans |
| 3.2.1.139 | more |
the three enzymes, xylanase, alpha-D-glucuronidase, and beta-glucosidase, together are responsible for complete degradation of larchwood xylan to xylose and 4-O-methyl-alpha-D-glucuronic acid |
| 3.2.1.139 | more |
enzyme is induced by growth on beech wood or birch wood |
| 3.2.1.139 | more |
the enzyme is involved in hydrolysis of xylan. Presence of endoxylanase is critical for efficient alpha-glucuronidase activity, and efficient alpha-glucuronidase activity is essential for the complete hydrolysis of intact xylan |
| 3.2.1.139 | more |
the role of the glucuronidase, in combination with cell-associated xylanases could be to hydrolyze decorated xylooligosaccharides, generated by extracellular hemicellulases, to xylose and 4-O-methyl-D-glucuronic acid, enabling the pseudomonad to preferentially utilize the sugars derived from these polymers |
| 3.2.1.139 | more |
the enzyme hydrolyzes methyl-alpha-D-glucuronic acid side chains from the internal regions of xylan. The enzyme is required to undergo a substantial conformational change to form a productive Michaelis complex with glucuronoxylan |
