Related Experiment Video
Updated: Jun 20, 2026

06:51
High-throughput Screening of Carbohydrate-degrading Enzymes Using Novel Insoluble Chromogenic Substrate Assay Kits
Published on: September 20, 2016
Features and applications of microbial sugar epimerases
1Department of Bioscience and Biotechnology, University of the Ryukyus, Nishihara-cho, Okinawa, Japan. sito@agr.u-ryukyu.ac.jp
Applied Microbiology and Biotechnology
|August 22, 2009
Summary
This review explores microbial sugar epimerases, enzymes that interconvert sugar forms. Their diverse catalytic mechanisms are key for producing valuable bioactive carbohydrates.
Area of Science:
- Biochemistry
- Enzymology
- Microbiology
Background:
- Sugar epimerases are enzymes catalyzing reversible interconversion of sugar epimers.
- Over 20 diverse types of sugar epimerases are known, with varied properties and structures.
- Recent research has focused on detailed characterization of microbial sugar epimerases.
Purpose of the Study:
- To review the catalytic aspects of microbial sugar epimerases.
- To highlight the relevance of these enzymes in the production of bioactive carbohydrates.
Main Methods:
- Literature review of microbial sugar epimerases.
- Analysis of reported catalytic mechanisms and properties.
- Survey of structural diversity.
Main Results:
- Microbial sugar epimerases exhibit diverse catalytic mechanisms.
- Detailed characterization reveals significant enzymatic variability.
- These enzymes are crucial for synthesizing bioactive mono- and oligosaccharides.
Conclusions:
- Microbial sugar epimerases offer versatile catalytic functions.
- Understanding their mechanisms facilitates the production of valuable carbohydrate compounds.
- This review provides insights into enzymatic strategies for bioactive carbohydrate synthesis.
Related Concept Videos
Microbial Biosensors
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
Microbial Fermentation
Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...
Other Glycolytic Pathways
The pentose phosphate pathway (PPP) operates in parallel with glycolysis, facilitating the metabolism of both pentoses and glucose. This pathway consists of two distinct phases: the oxidative and non-oxidative phases. While it does not directly generate ATP, the intermediates formed during the process can integrate into glycolysis, contributing to cellular energy metabolism when required.Oxidative Phase: NADPH ProductionThe oxidative phase of the pentose phosphate pathway is primarily...
Environmental Applications of Microorganisms
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
Biosynthesis of Polysaccharides
Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
Overview of Archaea
Archaea, named after the Archaean eon, represent a unique domain of life, distinct from bacteria and eukaryotes, with remarkable traits. Their cellular and molecular features, ecological adaptability, and industrial relevance highlight their importance in understanding life processes and leveraging biotechnology.Cellular and Molecular CharacteristicsA defining feature of archaea is their unique membrane composition. Archaeal membranes contain ether-linked isoprenoid lipids, which confer...

