Thiol-containing protein and molecule

Thiol-containing proteins and molecules" is a broad, non-specific category rather than a single molecular target or receptor. This term refers to all proteins and biological molecules featuring one or more thiol (–SH) groups, usually in the side chain of the amino acid cysteine. Thiol groups are essential for redox regulation, catalysis, and protein folding, commonly forming disulfide bonds that stabilize protein structure. They play foundational roles in antioxidant defenses, cellular signaling, and metabolic enzyme activity[1][2][3][4][5]. Aberrant thiol chemistry is implicated in a wide range of human diseases due to effects on oxidative stress, signaling, and protein misfolding. However, because this is not a single, defined protein or receptor, but rather a chemical property present in many molecules and sites, it is not typically considered a discrete therapeutic target[4][5]. Some drugs—such as N-acetylcysteine, thiol-reactive anticancer agents, and redox-modulating therapies—do exploit or interact with thiol chemistry on proteins, but "thiol-containing proteins and molecules" itself is not the canonical name of a functional biomolecular target for drug development.

Other names

Protein thiolSulfhydryl-containing proteinCysteine-containing proteinProtein-SH

Drugs exploiting or interacting with thiol chemistry may involve redox modulation, covalent thiol binding, disulfide exchange/formation, or alkylation of cysteine residues.