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Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue
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Electron Attachment to Isolated Molecules as a Probe to Understand Mitochondrial Reductive Processes.
Stanislav A Pshenichnyuk1, Alberto Modelli2,3
1Institute of Molecule and Crystal Physics, Ufa Federal Research Centre, Russian Academy of Sciences, Ufa, Russia. sapsh@anrb.ru.
Methods in Molecular Biology (Clifton, N.J.)
|June 3, 2021
Summary
Electron Transmission Spectroscopy and Dissociative Electron Attachment Spectroscopy investigate electron-molecule interactions and temporary negative ion formation. These methods shed light on toxic mechanisms and antioxidant activity in biological systems.
Area of Science:
- Physical Chemistry
- Chemical Biology
- Toxicology
Background:
- Electron-molecule interactions are fundamental to chemistry and biology.
- Dissociative Electron Attachment (DEA) and Dissociative Electron Transfer (DET) are key mechanisms.
- These processes are relevant in biological systems, such as mitochondrial function.
Purpose of the Study:
- To describe Electron Transmission Spectroscopy and Dissociative Electron Attachment Spectroscopy.
- To explore the formation and decay of temporary molecular negative ions.
- To investigate the biological relevance of DEA and DET mechanisms.
Main Methods:
- Electron Transmission Spectroscopy (ETS)
- Dissociative Electron Attachment Spectroscopy (DEA)
- Comparison with in vivo processes like Dissociative Electron Transfer (DET)
Main Results:
- ETS and DEA are suitable for studying electron-molecule interactions and negative ion resonances.
- DEA is the gas-phase analog of DET, relevant in biological reductive environments.
- Potential toxic mechanisms of compounds like dichlorodiphenyltrichloroethane and carbon tetrachloride were outlined.
- A possible antioxidant mechanism for polyphenols was discussed.
Conclusions:
- Electron spectroscopy techniques provide insights into fundamental chemical processes.
- DEA and DET mechanisms play roles in xenobiotic toxicity and cellular processes.
- These studies contribute to understanding molecular interactions in both gas-phase and biological contexts.
Keywords:
Antioxidant activityDissociative electron attachmentMitochondriaMolecular mechanismsOne-electron reductionReactive speciesResonance electron scatteringTemporary negative ionsToxicityXenobioticsMore Related Videos
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