Related Experiment Video
Updated: Aug 9, 2026

Structural Biology and Analytical Chemistry Approaches for Characterizing C-Glycoside Metabolic Enzymes in Human Gut Microbiota
Published on: May 23, 2025
Microbial aldolases as C-C bonding enzymes--unknown treasures and new developments
Anne K Samland1, Georg A Sprenger
1Institut für Mikrobiologie, Universität Stuttgart, Germany.
Aldolases are enzymes that create carbon-carbon bonds, valuable for synthesizing complex molecules like rare sugars. Microbial aldolases offer diverse applications in asymmetric synthesis and chemoenzymatic chemistry.
Area of Science:
- Biocatalysis
- Organic Chemistry
- Enzymology
Background:
- Aldolases are lyases catalyzing stereoselective aldol addition reactions.
- They form crucial carbon-carbon bonds, creating stereocenters in products.
- Aldolases are key tools for asymmetric synthesis of valuable compounds.
Purpose of the Study:
- To provide an update on aldolase research, focusing on microbial enzymes.
- To highlight the utility of aldolases in synthesizing complex molecules.
- To explore strategies for expanding the aldolase toolkit.
Main Methods:
- Review of current literature on aldolase applications.
- Discussion of various aldolase classes and their donor specificities.
- Exploration of screening and directed evolution for novel aldolase activities.
Main Results:
- Aldolases exhibit specificity for donor compounds but broad acceptance of aldehyde acceptors.
- Microbial aldolases, beyond fructose-1,6-bisphosphate aldolase, are increasingly utilized.
- Novel aldolases accepting dihydroxyacetone or hydroxyacetone have been identified.
Conclusions:
- Aldolases are versatile biocatalysts for producing rare sugars and complex derivatives.
- Screening and directed evolution are effective strategies to discover and engineer aldolases.
- Microbial aldolases represent a growing resource for synthetic chemists.
Related Concept Videos
C–C Bond Formation: Aldol Condensation Overview
C–C Bond Cleavage: Retro-Aldol Reaction
In the first step, as depicted in Figure 1, the base deprotonates the β-hydroxy ketone at the hydroxyl group to form an alkoxide ion.
Acid-Catalyzed Aldol Addition Reaction
Dehydration of Aldols to Enals: Base-Catalyzed Aldol Condensation
Base-Catalyzed Aldol Addition Reaction
Aldol Condensation vs Claisen Condensation

