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.

Medical dictionary. 2011.

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  • Native chemical ligation — or NCL is the most widely used form of chemical ligation, a technique for constructing a large polypeptide from two or more unprotected peptides. In native chemical ligation a peptide containing a C terminal thioester reacts with another peptide… …   Wikipedia

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  • Thioester — Structure générale d un thioester Les thioesters sont des composés résultant de la condensation d un sulfure avec un groupement acyle. La formule générale d un thioester est R (C=O) S R . Ils sont le produit de l esterification d un acide… …   Wikipédia en Français