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Sulfhydryl Group Interactions (SH Interactions)

Target: SH Interactions
Molecular classification: Chemical Interaction, Post-translational Modification

Overview

The “SH group interaction” encompasses diverse chemical contacts made by sulfhydryl moieties—primarily those on cysteines—in proteins. These interactions underpin essential aspects of molecular biology including structural integrity, enzymatic catalysis, redox signaling, and drug targeting strategies.

Other names: Thiol InteractionsCysteine Interactions-SH Group Interactions

Mechanism of action

Varies depending on the specific protein and drug. Examples include covalent modification of cysteine residues, disulfide bond formation/reduction, and redox modulation.

Biological functions

Protein FoldingProtein StabilityEnzyme CatalysisRedox RegulationDrug Binding

Disease associations

Cancer (indirectly, via protein dysregulation)Neurodegenerative Diseases (indirectly, via protein misfolding)Oxidative Stress Related Diseases

Safety considerations

Non-specific modification of SH groups can lead to toxicity.Disruption of disulfide bonds can destabilize proteins and impair their function.

Interacting drugs

Dithiothreitol (DTT)

1 more in the full profile.

Biomarkers

Changes in SH group accessibility or redox state in specific proteins may serve as biomarkers.

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