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Updated: Jan 4, 2026
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One-step Metabolomics: Carbohydrates, Organic and Amino Acids Quantified in a Single Procedure
Published on: June 25, 2010
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Inborn errors of metabolite repair
Maria Veiga-da-Cunha1, Emile Van Schaftingen1,2, Guido T Bommer1,2
1de Duve Institute, Université Catholique de Louvain (UCLouvain), Brussels, Belgium.
Journal of Inherited Metabolic Disease
|November 7, 2019
Summary
Enzymes exhibit substrate and catalytic promiscuity, producing non-classical metabolites. Specialized metabolite repair enzymes are crucial for eliminating these byproducts and preventing diseases caused by their accumulation.
Area of Science:
- Biochemistry
- Metabolomics
- Enzymology
Background:
- Enzymes were traditionally considered highly specific, preventing harmful side-product formation.
- Recent findings reveal enzymes possess substrate and catalytic promiscuity, leading to non-classical metabolites.
- These non-classical metabolites are not efficiently processed by standard metabolic pathways.
Purpose of the Study:
- To highlight the existence and importance of metabolite repair enzymes.
- To discuss the role of metabolite repair enzymes in preventing the accumulation of non-classical metabolites.
- To underscore the significance of identifying novel metabolite repair enzymes and associated diseases.
Main Methods:
- Review of recent biochemical and genetic studies.
- Analysis of enzyme promiscuity mechanisms (substrate and catalytic).
- Examination of known inborn errors of metabolite repair.
Main Results:
- Enzymes can perform non-canonical reactions, generating non-classical metabolites.
- Metabolite repair enzymes are essential for detoxifying these compounds.
- Genetic defects in repair enzymes cause inborn errors of metabolite repair, such as specific acidurias and G6PC3 deficiency.
Conclusions:
- Enzyme promiscuity is a significant factor in cellular metabolism.
- Metabolite repair pathways are critical for maintaining metabolic homeostasis.
- Further research is needed to discover additional repair enzymes and elucidate related genetic disorders.
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