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Related Experiment Video

Updated: Feb 17, 2026

Resin-Assisted Capture Coupled with Isobaric Tandem Mass Tag Labeling for Multiplexed Quantification of Protein Thiol Oxidation

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Alternative Thiol-Based Redox Systems.

Gustavo Salinas^1,2, Marcelo A Comini³

¹1 Departamento de Biociencias, Facultad de Química, Universidad de la República , Montevideo, Uruguay .

Antioxidants & Redox Signaling

|December 7, 2017

Summary

This summary is machine-generated.

Organisms maintain thiol-redox balance using shared systems like glutathione and thioredoxin. Some pathogens evolved unique noncanonical redox systems, such as mycothiol and ergothioneine (EGT), for survival and virulence.

Keywords:

bacillithiol ergothioneine mycothiol trypanothione

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Area of Science:

Biochemistry
Molecular Biology
Cellular Biology

Background:

Cellular survival depends on thiol-redox homeostasis, maintained by glutathione and thioredoxin systems.
Oxidative stress regulation and cellular processes rely on sulfur-based compounds and proteins.
Most organisms utilize common NADPH-dependent redox systems.

Discussion:

Evolution has led to novel cysteine-based redox cofactors in certain lineages.
Noncanonical systems include mycothiol, bacillithiol, and ergothioneine (EGT).
These systems are found in various bacterial and eukaryotic phyla, including fungi and Euglenozoa.

Key Insights:

Ergothioneine (EGT) is present in some fungi.
Trypanothione is unique to Euglenozoa species.
The Forum details the state-of-the-art knowledge on these noncanonical redox systems.

Outlook:

Further research into the functions of these systems in physiology and pathogenicity is crucial.
Understanding the structural and biochemical specializations of these components is key.
Exploring these systems offers insights into pathogen survival mechanisms.