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EnglishThe spontaneous cleavage reaction of the tetra-peptide Piv-Gly Asn-Sar-Gly-NHtBu to the C-terminal dipeptide and N-terminal succinimide dipeptide proceeds through pre-equilibrium deprotonation of the amide group of the asparagine side chain, followed by intramolecular nucleophilic attack of nitrogen on the peptide carbonyl carbonyl carbon atom. General acid-catalyzed breakdown of the intermediate then gives the products. According to this mechanism, the reaction rate strongly increases with pH and buffer concentration.
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http://hdl.handle.net/11584/6634| Titolo: | Kinetics and Mechanism of the Cleavage of the Peptide Bond Next to Asparagine |
| Autori: | |
| Data di pubblicazione: | 1996 |
| Rivista: | |
| Abstract: | The spontaneous cleavage reaction of the tetra-peptide Piv-Gly Asn-Sar-Gly-NHtBu to the C-terminal dipeptide and N-terminal succinimide dipeptide proceeds through pre-equilibrium deprotonation of the amide group of the asparagine side chain, followed by intramolecular nucleophilic attack of nitrogen on the peptide carbonyl carbonyl carbon atom. General acid-catalyzed breakdown of the intermediate then gives the products. According to this mechanism, the reaction rate strongly increases with pH and buffer concentration. |
| Handle: | http://hdl.handle.net/11584/6634 |
| Tipologia: | 1.1 Articolo in rivista |
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