Sulfhydryl Group on Cell Membrane Proteins (-SH)

Sulfhydryl groups (–SH), present on cysteine residues of cell membrane proteins, play a crucial role in maintaining protein structure, regulating redox-sensitive processes, and mediating cellular interactions. Their reactivity makes them vulnerable to oxidation or chemical modification, impacting membrane properties and contributing to pathologies like hemolytic anemia. These groups are not typically direct therapeutic targets themselves, but rather critical components of protein structure and function that can be modulated indirectly.

Other names

Thiol GroupCysteine Residues on Membrane ProteinsMembrane Protein Thiols

Sulfhydryl-reactive crosslinkers (e.g., maleimides, haloacetyls) form stable thioether bonds with –SH moieties via alkylation or participate in disulfide exchange reactions, thereby modifying protein structure and function. Oxidation of sulfhydryl groups leads to disulfide bond formation, altering protein conformation and activity.