ArticleAntioxidants (Basel, Switzerland)2020
Species-Specific, pH-Independent, Standard Redox Potential of Selenocysteine and Selenocysteamine.
Article in Antioxidants (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Selenium: From Redox Signaling to Interactions with the Gut Microbiome.Biological trace element research · 2026Review
- Promiscuity in Molecular Mimics of the Cysteine Dioxygenase: Effects of Selenium in the Substrate and Cobalt as the Central Metal Ion.Angewandte Chemie (International ed. in English) · 2025Article
- Structural Identification and Molecular Interaction Modeling Analysis of Antioxidant Activity Selenium-Enriched Peptides from Selenium-EnrichedAntioxidants (Basel, Switzerland) · 2025Article
- Metabolic Probing of Sialylated Glycoconjugates with Fluorine-Selenol Displacement Reaction (FSeDR).ACS bio & med chem Au · 2025Article
- Prediction of Antioxidant Capacity of Thiolate-Disulfide Systems Using Species-Specific Basicity Values.Antioxidants (Basel, Switzerland) · 2024Article
- Influence of Dietary Selenium on the Oxidative Stress in Horses.Biological trace element research · 2023Review
- Properties of Selenolate-Diselenide Redox Equilibria in View of Their Thiolate-Disulfide Counterparts.Antioxidants (Basel, Switzerland) · 2023Review
- Fabrication and Optimization of Nafion as a Protective Membrane for TiN-Based pH Sensors.Sensors (Basel, Switzerland) · 2023Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
Microscopic redox equilibrium constants and standard redox potential values were determined to quantify selenolate-diselenide equilibria of biological significance. The highly composite, codependent acid-base and redox equilibria of selenolates could so far be converted into pH-dependent, apparent parameters (equilibrium constants, redox potentials) only. In this work, the selenolate-diselenide redox equilibria of selenocysteamine and selenocysteine against dithiothreitol were analyzed by quantitative nuclear magnetic resonance (NMR) methods to characterize the interfering acid-base and redox equilibria. The directly obtained, pH-dependent, conditional redox equilibrium constants were then decomposed by our method into pH-independent, microscopic constants, which characterize the two-electron redox transitions of selenocysteamine and selenocysteine. The 12 different, species-specific parameter values show close correlation with the respective selenolate basicities, providing a tool to estimate otherwise inaccessible site-specific selenolate-diselenide redox potentials of related moieties in large peptides and proteins.
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