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Updated: Feb 22, 2026
Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
Published on: February 6, 2020
An amino acid domino effect orchestrates ClpP's conformational states
Matthias Stahl1, Stephan A Sieber1
1Center for Integrated Protein Science Munich (CIPS(M)), Chair II of Organic Chemistry, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, 85747 Garching b. München, Germany.
Abstract:
Maintaining the cellular protein homeostasis means managing life on the brink of death. This balance is largely based on precise fine-tuning of enzyme activities. For instance, the ClpP protease possesses several conformational switches which are fundamental to regulating its activity. Efforts have focused on revealing the structural basis of ClpP's conformational control. In the last decade, several amino acid clusters have been identified and functionally linked to specific activation states. Researchers have now begun to couple these hotspots to one another, uncovering a global network of residues that switch in response to internal and external stimuli. For these studies, they used small molecules to mimic intermolecular interactions and point-mutational studies to shortcut regulating amino acid circuits.
Insights
Researchers uncovered a global network of amino acid residues in the ClpP protease that regulate its activity. This network switches in response to stimuli, crucial for maintaining cellular protein homeostasis.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Biology
Background:
- Cellular protein homeostasis is vital for life, relying on precise enzyme activity regulation.
- The ClpP protease has conformational switches critical for controlling its activity.
Purpose of the Study:
- To elucidate the structural basis of ClpP protease's conformational control.
- To map the network of amino acid residues involved in ClpP activation states.
Main Methods:
- Utilized small molecules to mimic intermolecular interactions.
- Employed point-mutational studies to investigate amino acid circuits.
Main Results:
- Identified amino acid clusters functionally linked to specific ClpP activation states.
- Uncovered a global network of residues that switch in response to stimuli.
- Demonstrated how these hotspots are coupled to regulate ClpP activity.
Conclusions:
- The identified network of residues provides a deeper understanding of ClpP protease regulation.
- This network is essential for maintaining cellular protein homeostasis.
- Findings pave the way for targeted modulation of ClpP activity.
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