Conformationally Restricted β-Sheet Breaker Peptides Incorporating Cyclic α-Methylisoserine Sulfamidates

Nuria Mazo, Claudio D. Navo, Francesca Peccati, Jacopo Andreo, Cristina Airoldi, Gildas Goldsztejn, Pierre Çarçabal, Imanol Usabiaga, Mariona Sodupe, Stefan Wuttke, Jesús H. Busto, Jesús M. Peregrina, Emilio J. Cocinero, Gonzalo Jiménez-Osés

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Peptides containing variations of the β-amyloid hydrophobic core and five-membered sulfamidates derived from β-amino acid α-methylisoserine have been synthesized and fully characterized in the gas phase, solid state and in aqueous solution by a combination of experimental and computational techniques. The cyclic sulfamidate group effectively locks the secondary structure at the N-terminus of such hybrid peptides imposing a conformational restriction and stabilizing non-extended structures. This conformational bias, which is maintained in the gas phase, solid state and aqueous solution, is shown to be resistant to structure templating through assays of in vitro β-amyloid aggregation, acting as β-sheet breaker peptides with moderate activity.

Original languageEnglish
Article numbere202202913
JournalChemistry - A European Journal
Volume29
Issue number9
DOIs
Publication statusPublished - Feb 10 2023
Externally publishedYes

Keywords

  • hybrid peptides
  • sulfamidates
  • β-amino acids
  • β-amyloid
  • β-sheet breaker peptides

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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