ANALYSIS OF PRIMARY PHOTOCHEMICAL PROCESSES IN BACTERIORHODOPSIN

U. Dinur, B. Honig, M. Ottolenghi

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Abstract— The sequence of primary events following light absorption by light adapted bacteriorhodopsin (bR570) is considered by analyzing recent picosecond absorption and emission data. The analysis is facilitated by theoretical calculations which allow us to characterize the properties of the first excited singlet state. It is concluded that excitation leads to the eventual population of a photochemically important nonfluorescent excited state (I) which decays into a photoproduct (J625)‐ In J625, which is most probably a ground state molecule, the chromophore has undergone a structural change, presumably trans→ 13‐cis isomerization. It is suggested that the subsequent process reflects a relaxation of the protein environment involving proton transfer.

Original languageEnglish
Pages (from-to)523-527
Number of pages5
JournalPhotochemistry and Photobiology
Volume33
Issue number4
DOIs
StatePublished - 1 Jan 1981
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

Fingerprint

Dive into the research topics of 'ANALYSIS OF PRIMARY PHOTOCHEMICAL PROCESSES IN BACTERIORHODOPSIN'. Together they form a unique fingerprint.

Cite this