A rapid quantitative activity assay shows that the Vibrio cholerae colonization factor GbpA is an active lytic polysaccharide monooxygenase
- 7 August 2014
- journal article
- Published by Wiley in FEBS Letters
- Vol. 588 (18) , 3435-3440
Abstract
The discovery of the copper‐dependent lytic polysaccharide monooxygenases (LPMOs) has revealed new territory for chemical and biochemical analysis. These unique mononuclear copper enzymes are abundant, suggesting functional diversity beyond their established roles in the depolymerization of biomass polysaccharides. At the same time basic biochemical methods for characterizing LPMOs, such as activity assays are not well developed. Here we describe a method for quantification of C1‐oxidized chitooligosaccharides (aldonic acids), and hence LPMO activity. The method was used to quantify the activity of a four‐domain LPMO from Vibrio cholerae, GbpA, which is a virulence factor with no obvious role in biomass processing.Keywords
Funding Information
- Norwegian Research Council (214138, 214613, 216162)
- Vista program of the Norwegian Academy of Science and Letters (6505)
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