Direct observation of energy detrapping in LH1-RC complex by two-dimensional electronic spectroscopy

Fei Ma, Long-Jiang Yu, Ruud Hendrikx, Zheng Yu Wang-Otomo, Rienk Van Grondelle

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The purple bacterial core light harvesting antenna-reaction center (LH1-RC) complex is the simplest system able to achieve the entire primary function of photosynthesis. During the past decade, a variety of photosynthetic proteins were studied by a powerful technique, two-dimensional electronic spectroscopy (2DES). However, little attention has been paid to LH1-RC, although its reversible uphill energy transfer, trapping, and backward detrapping processes, represent a crucial step in the early photosynthetic reaction dynamics. Thus, in this work, we employed 2DES to study two LH1-RC complexes of Thermochromatium (Tch.) tepidum. By direct observation of detrapping, the complex reversible process was clearly identified and an overall scheme of the excitation evolution in LH1-RC was obtained.

Original languageEnglish
Pages (from-to)591-594
Number of pages4
JournalJournal of the American Chemical Society
Volume139
Issue number2
DOIs
Publication statusPublished - Jan 18 2017

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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