Unsaturated thioacetic acids as novel mechanism-based inhibitors of peptidylglycine α-hydroxylating monooxygenase

Several unsaturated thioacetic acids were synthesized as potential mechanism-based inhibitors of peptidyglycine α-hydroxylating monooxygenase (PHM) prepared from horse serum. Trans-styrylthioacetic acid produced potent time-dependent inhibition of PHM. Potential mechanisms are proposed to explain PHM inactivation by unsaturated thioacetic acids.