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Design, Synthesis, and Application of an Optimized Monofluorinated Aliphatic Label for Peptide Studies by Solid-State 19F NMR Spectroscopy

Angew. Chem. Int. Ed. 2016, 55 (47), 1478814792

DOI: 10.1002/anie.201608116

Kokhan S. O.; Tymtsunik A. V.; Grage S. L.; Afonin S.; Babii O.; Berditsch M.; Strizhak A. V.; Bandak D.; Platonov M. O.; Komarov I. V.; Ulrich A. S.; Mykhailiuk P. K.

A conformationally restricted monofluorinated α-amino acid, (3-fluorobicyclo[1.1.1]pentyl)glycine (F-Bpg), was designed as a label for the structural analysis of membrane-bound peptides by solid-state 19F NMR spectroscopy. The compound was synthesized and validated as a 19F label for replacing natural aliphatic α-amino acids. Calculations suggested that F-Bpg is similar to Leu/Ile in terms of size and lipophilicity. The 19F NMR label was incorporated into the membrane-active antimicrobial peptide PGLa and provided information on the structure of the peptide in a lipid bilayer.

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