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Updated: Jul 1, 2026
05:27
Inner Mitochondrial Membrane Sensitivity to Na+ Reveals Partially Segmented Functional CoQ Pools
Published on: July 20, 2022
Complete enzyme clustering enhances coenzyme Q biosynthesis via substrate channeling
Dianzhuo Wang1, Andrea Gottinger2, Jio Jeong1
1Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
Nature Communications
|June 29, 2026
Summary
Metabolons, transient enzyme assemblies, enhance metabolic flux by clustering. Protein proximity, not specific organization, is key for substrate channeling and boosting Coenzyme Q production.
Area of Science:
- Biochemistry
- Molecular Biology
- Systems Biology
Background:
- Metabolons are transient enzyme assemblies that facilitate multi-step metabolic pathways.
- The precise mechanisms by which metabolons enhance metabolic flux are not fully understood.
Purpose of the Study:
- To investigate the molecular determinants of metabolon formation in Coenzyme Q (CoQ) biosynthesis.
- To elucidate how metabolons enhance metabolic flux and substrate channeling.
Main Methods:
- Coarse-grained molecular dynamics simulations.
- Biochemical experiments.
- Analysis of protein-protein interaction strength and network organization.
Main Results:
- The COQ metabolon forms at a phase transition, with coordinated sigmoidal responses in clustering and flux.
- Metabolon formation enhances CoQ production efficiency through substrate channeling.
- Protein proximity, rather than a defined spatial arrangement, is critical for substrate channeling.
Conclusions:
- Metabolon formation is governed by protein-protein interaction strength and occurs at a phase transition.
- Complete metabolons are essential for efficient substrate channeling and enhanced metabolic flux.
- These findings offer a framework for understanding metabolon function in various metabolic pathways.
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