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Updated: Sep 3, 2025
07:35
Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
Published on: June 1, 2022
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2-Propylphenol Allosterically Modulates COQ8A to Enhance ATPase Activity
Nathan H Murray1,2,3, Adam Lewis1, Juan P Rincon Pabon4
1Department of Biochemistry, University of Wisconsin─Madison, Madison, Wisconsin 53706, United States.
ACS Chemical Biology
|July 29, 2022
Summary
Researchers identified how a small molecule modulates COQ8A, a protein crucial for coenzyme Q (CoQ) biosynthesis. This finding clarifies COQ8A
Area of Science:
- Biochemistry
- Molecular Biology
- Enzymology
Background:
- Coenzyme Q (CoQ) is vital for cellular energy production and acts as an antioxidant.
- COQ8A, a kinase-like protein, is essential for CoQ biosynthesis.
- Understanding COQ8A's function is hindered by a lack of specific molecular probes.
Purpose of the Study:
- To investigate the mechanism by which 2-propylphenol modulates COQ8A activity.
- To identify the binding site of 2-propylphenol on COQ8A.
- To elucidate how 2-propylphenol affects COQ8A's enzymatic properties.
Main Methods:
- Nuclear Magnetic Resonance (NMR) spectroscopy.
- Hydrogen-deuterium exchange mass spectrometry (HDX-MS).
- Biophysical and enzymatic assays.
Main Results:
- A putative 2-propylphenol binding site on COQ8A was identified.
- 2-propylphenol binding enhances COQ8A's affinity for nucleotides.
- The compound increases COQ8A's ATPase activity through modulation of a conserved domain.
Conclusions:
- 2-propylphenol serves as a valuable tool for probing COQ8A function.
- The study provides mechanistic insights into COQ8A regulation.
- Findings may facilitate the development of therapeutics targeting CoQ production.
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