Hepatic protein thiol

Hepatic protein thiols are cysteine-derived sulfhydryl groups present within liver proteins, essential for maintaining redox homeostasis, antioxidant defense, enzymatic function, and cellular signaling in the liver[1][3][4][5]. These thiols are sensitive to oxidative modification, serving both as sensors and regulators of redox changes and chemical stress. Depletion or excessive oxidation of hepatic protein thiols is associated with tissue damage, increased susceptibility to oxidative injury, and progression of liver diseases such as steatosis or fibrosis[1][9]. While not a druggable receptor or enzyme, the hepatic protein thiol pool is a critical functional component in redox biology and is leveraged as a biomarker for oxidative stress and liver pathophysiology[9]. Summary: "Hepatic protein thiols" does not refer to a discrete, canonical molecular target (like a specific receptor or enzyme) but describes the ensemble of protein-bound -SH groups in the liver. It is not a therapeutic "target" per conventional drug discovery definitions, and thus this entry would be flagged as an incorrect or overly broad target for structured drug-target databases.

Other names

protein thiol groups (liver)liver protein sulfhydrylshepatic protein-SH

Antioxidants (e.g., N-acetylcysteine, vitamin E) protect or replenish protein thiols, reduce oxidative stress Drugs altering glutathione (GSH) levels modulate protein thiol redox state