Excitation energy transfer in individual light-harvesting chlorosome from green photosynthetic bacterium Chloroflexus aurantiacus at cryogenic temperature

Yoshitaka Saga, Hitoshi Tamiaki, Yutaka Shibata, Shigeru Itoh

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The excitation energy transfer from bacteriochlorophyll(BChl)-c self-aggregates to energy-accepting BChl-a in proteins (baseplates) in an individual photosynthetic light-harvesting complex (chlorosome) of a green filamentous photosynthetic bacterium Chloroflexus aurantiacus was successfully observed at cryogenic temperature. The ratio of intensity of the fluorescence peak of BChl-a to that of BChl-c self-aggregates in individual chlorosomes, which demonstrated relative efficiency of the excitation energy transfer, was heterogeneous between 0.09 and 0.72. This suggests that excitonic interaction between BChl-c self-aggregates and BChl-a in baseplates was heterogeneous among individual chlorosomes.

Original languageEnglish
Pages (from-to)34-37
Number of pages4
JournalChemical Physics Letters
Volume409
Issue number1-3
DOIs
Publication statusPublished - 2005 Jun 20
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Excitation energy transfer in individual light-harvesting chlorosome from green photosynthetic bacterium Chloroflexus aurantiacus at cryogenic temperature'. Together they form a unique fingerprint.

  • Cite this