thioester

(redirected from acylmercaptan)

thi·o·es·ter

(thī'ō-es'tĕr),
In enzymology, an ester where the oxygen bridging the substrate or product carbonyl carbon and the enzyme is replaced by a sulfur (usually through a Cys residue); a high-energy intermediate in many enzymes.
Synonym(s): acylmercaptan