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Sulfhydryl Group-Containing Proteins
- Molecular classification
- Protein Family, Enzyme (if applicable), Structural Protein (if applicable), Antioxidant (Glutathione), Other
01
Overview
Sulfhydryl group-containing proteins are proteins that possess one or more sulfhydryl (–SH) groups, primarily in the side chains of cysteine residues. These –SH groups, also known as thiols, play critical roles in protein structure and function, including disulfide bond formation, catalysis, redox regulation, and detoxification. Glutathione is a prominent example. Their reactivity makes them targets for both therapeutic intervention and toxicological insult.
- Other names
- Thiol-containing proteinsCysteine-containing proteinsSulfhydryl proteins
02
Mechanism of action
Modulation of protein function via thiol modification (oxidation, alkylation, metal binding). Glutathione acts as a direct antioxidant by scavenging free radicals and detoxifying xenobiotics.
03
Biological functions
Structural stabilizationCatalysisRedox regulationDetoxificationMetal bindingAntioxidant activity (Glutathione)
04
Disease associations
Oxidative stress related diseasesHeavy metal toxicityCancerNeurodegenerative diseasesInflammation
05
Safety considerations
Heavy metal toxicity due to thiol bindingDisruption of redox balanceNon-specific modification of essential enzymesPotential for drug-induced oxidative stress
06
Interacting drugs
N-acetylcysteine (NAC)
3 more in the full profile.
07
Biomarkers
Glutathione levels (GSH/GSSG ratio)Protein thiol oxidation statusCysteine levelsMetallothionein levels
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