Hydrophobic association of a side chains induces reversible helix folding in a dual aromatic ring tagged short peptide

Ryusuke Tsuchie, Mayu Shimosato, Keita Hamasaki

Research output: Contribution to journalArticle

Abstract

A short peptide having two naphthalene tags folds into a stable α-helix. The helix content of the peptide was 78%. The hydrophobic association of the naphthalene in the peptide was confirmed by its excimer fluorescence. When this hydrophobic association of the naphthalene was disturbed by forming inclusion complex with 2-hydroxypropyl-β-cyclodextrin (HPCD), the helix content was reduced to 64%. The binding of naphthalene on the peptide with HPCD was confirmed by its fluorescence spectra. On the other hand this inclusion complex on naphthalene and HPCD was inhibited with 1-adamantanol, the helix content of the peptide was completely recovered to 78%. The dual naphthalene tagged peptide displayed reversible folding of the α-helix.

Original languageEnglish
Pages (from-to)1276-1278
Number of pages3
JournalChemistry Letters
Volume47
Issue number10
DOIs
Publication statusPublished - 2018 Jan 1

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Keywords

  • Inclusion phenomena
  • Reversible folding
  • Short peptide

ASJC Scopus subject areas

  • Chemistry(all)

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