Photocontrol of polypeptide conformation

Akihiko Ueno, Jun Ichi Anzai, Keiko Takahashi, Tetsuo Osa

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Five copolypeptide series containing azobenzene groups in their side-chains were prepared in order toinvestigate the effect of photoisomerization of the side-chain azobenzenc groups on the polypeptide conformations. It was found by circular dichroism (CD) measurements that conformational changes such as lefthanded (LH) helix→right-handed (RH) helix, LH helix→random coil and random coil→RH helix are inducedby photoirradiation. It was also found that a copolymer which undergoes a solvent-induced RH helix→LHhelix→random coil transition exhibits remarkable dependency of its photoresponsive behavior on the solventcomposition. There seemed no general relation between the main-chain helical sense and, the sign of the side-chain CD band for the five copolymer series.

Original languageEnglish
Pages (from-to)281-286
Number of pages6
Issue number4
Publication statusPublished - 1980


  • Circular Dichroism
  • Conformation
  • Conformational Change
  • Copolymer
  • Helix
  • Photocontrol
  • Photoisomerization
  • Polypeptide
  • Random Coil
  • Solvent Effect

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Environmental Science(all)
  • Polymers and Plastics


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