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Updated: Jun 13, 2026
09:42
Unraveling Entropic Rate Acceleration Induced by Solvent Dynamics in Membrane Enzymes
Published on: January 16, 2016
Sticky enzymes: increased metabolic efficiency via substrate-dependent enzyme clustering
Alejandro Martínez-Calvo1,2,3, Jello Zhou3, Yaojun Zhang4,5
1Princeton Center for Theoretical Science, Princeton University, Princeton, NJ 08544, USA.
PRX Life
|June 12, 2026
Summary
Enzymes can self-organize into functional clusters regulated by substrate availability, boosting metabolic pathway efficiency and reducing toxicity. This self-organization strategy offers a novel approach for synthetic biology and metabolic engineering applications.
Area of Science:
- Biochemistry
- Systems Biology
- Synthetic Biology
Background:
- Enzyme coclustering enhances metabolic pathway efficiency by increasing flux, reducing toxicity, and enabling sensitive regulation.
- Theoretical models explore optimal enzyme cluster organization, but practical cellular implementation remains unclear.
Purpose of the Study:
- To propose and investigate a self-organization mechanism for enzyme clusters based on phase separation.
- To demonstrate how substrate availability can regulate enzyme cluster formation and function within metabolic pathways.
Main Methods:
- Mathematical modeling of simple metabolic pathways incorporating thermodynamic constraints.
- Simulation of enzyme self-organization driven by substrate-dependent 'stickiness'.
Main Results:
- Enzyme clusters formed via this mechanism achieve near-optimal size and spacing.
- Pathway fluxes increased 50-1000 fold and toxic metabolites decreased 10-100 fold at realistic enzyme densities.
- Substrate-regulated enzyme 'stickiness' enables dynamic cluster formation based on metabolic needs.
Conclusions:
- Phase-separating enzymes can dynamically self-organize into functional clusters, optimizing metabolic pathways.
- This self-organization strategy provides a new paradigm for designing enzyme clusters in synthetic biology and metabolic engineering.
- Allosteric regulation of enzyme stickiness is a potential mechanism for fine-tuning cluster formation and function.
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