sulfhydryl reagent

sulf·hy·dryl re·a·gent

reagent that reacts with thiol groups, particularly those in proteins.
References in periodicals archive ?
In addition, further treatment of S1 with the sulfhydryl reagent, N-ethylmaleimide (NEM), results in a myosin head species (NEM-S1) that remains tightly bound to actin filaments, even in the presence of ATP, and thus can serve as a potent specific inhibitor of actomyosin function (Cande, 1986: Meeusen and Cande, 1979).
Cysteine 254 of the 73-kDa A subunit is responsible for inhibition of the coated vesicle ([H.sup.+])-ATPase upon modification by sulfhydryl reagents. J Biol Chem 267:5817-5822.