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Updated: Dec 8, 2025
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Anaerobic Protein Purification and Kinetic Analysis via Oxygen Electrode for Studying DesB Dioxygenase Activity and Inhibition
Published on: October 3, 2018
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Cellobiose dehydrogenase.
Florian Csarman1, Lena Wohlschlager1, Roland Ludwig1
1Biocatalysis and Biosensing Laboratory, Department of Food Science and Technology, BOKU-University of Natural Resources and Life Sciences, Vienna, Austria.
The Enzymes
|September 21, 2020
Summary
Cellobiose dehydrogenase (CDH) is a fungal enzyme aiding biomass breakdown. Different CDH classes show varied properties, enabling applications in biosensors and biofuel cells.
Area of Science:
- Biochemistry
- Enzymology
- Biotechnology
Background:
- Cellobiose dehydrogenase (CDH) is an extracellular hemoflavoenzyme from fungi.
- It aids lignocellulolytic enzymes in biomass degradation.
- CDH comprises a flavodehydrogenase (DH) domain and an N-terminal cytochrome (CYT) domain.
Purpose of the Study:
- To define phylogenetic classes of CDHs.
- To investigate structural and catalytic property variations among CDH classes.
- To explore CDH applications in various fields.
Main Methods:
- Sequence analysis to define CDH phylogenetic classes.
- Characterization of structure, reaction mechanism, and kinetics for Class-I and Class-II CDHs.
- Recombinant expression of CDHs for application studies.
Main Results:
- Four distinct phylogenetic classes of CDHs were identified.
- CDHs exhibit class-specific differences in cellulose binding, substrate specificity, and pH optima.
- Detailed characterization of Class-I and Class-II CDHs was achieved.
Conclusions:
- CDH classification reveals diverse enzymatic properties.
- Recombinant CDHs have broad applications in biomass hydrolysis, biosensors, biofuel cells, and antimicrobial surface functionalization.
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