title: A switchable stapled peptide.
abstract: The O-N acyl transfer reaction has gained significant popularity in peptide and medicinal chemistry. This reaction has been successfully applied to the synthesis of difficult sequence-containing peptides, cyclic peptides, epimerization-free fragment coupling and more recently, to switchable peptide polymers. Herein, we describe a related strategy to facilitate the synthesis and purification of a hydrophobic stapled peptide. The staple consists of a serine linked through an amide bond formed from its carboxylic acid function and the side chain amino group of diaminopropionic acid and through an ester bond formed from its amino group and the side chain carboxylic acid function of aspartic acid. The α-amino group of serine was protonated during purification. Interestingly, when the peptide was placed at physiological pH, the free amino group initiated the O-N shift reducing the staple length by one atom, leading to a more hydrophobic stapled peptide.
authors.affiliation: Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France.|University of Chemical Technology and Metallurgy, Sophia, Bulgaria.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Kalistratova
authors.affiliation: Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France.
authors.forename: Baptiste
authors.initials: B
authors.lastname: Legrand
authors.affiliation: Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Verdié
authors.affiliation: University of Chemical Technology and Metallurgy, Sophia, Bulgaria.
authors.forename: Emilia
authors.initials: E
authors.lastname: Naydenova
authors.affiliation: Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France.
authors.forename: Muriel
authors.initials: M
authors.lastname: Amblard
authors.affiliation: Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France.
authors.forename: Jean
authors.initials: J
authors.lastname: Martinez
authors.affiliation: Institut des Biomolécules Max Mousseron (IBMM), UMR5247 CNRS, ENSCM, Université de Montpellier, 15 avenue Charles Flahault, 34000, Montpellier, France.
authors.forename: Gilles
authors.initials: G
authors.lastname: Subra
mesh_terms: D000215:Acylation; D000577:Amides / Q000737:chemistry*; D001224:Aspartic Acid / Q000737:chemistry; D002264:Carboxylic Acids / Q000737:chemistry; D005449:Fluorenes / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D057927:Hydrophobic and Hydrophilic Interactions; D010446:Peptide Fragments / Q000737:chemistry*; D010456:Peptides, Cyclic / Q000138:chemical synthesis*; D011522:Protons; D012694:Serine / Q000737:chemistry*
chemical_list: D000577:Amides; D002264:Carboxylic Acids; D005449:Fluorenes; D010446:Peptide Fragments; D010456:Peptides, Cyclic; D011522:Protons; D001224:Aspartic Acid; D012694:Serine
keywords: O-N acyl shift; solubility; stapled peptide