Excitation energy flow in chlorosome antennas of green photosynthetic bacteria

Mamoru Mimuro, Tsunenori Nozawa, Naoto Tamai, Keizou Shimada, Iwao Yamazaki, Su Lin, Robert S. Knox, Bruce P. Wittmershaus, Daniel C. Brune, Robert E. Blankenship

Research output: Contribution to journalArticle

88 Citations (Scopus)

Abstract

Energy flow in whole cells of the thermophilic green photosynthetic bacterium Chloroflexus aurantiacus was studied by measurements of time-resolved fluorescence spectra in the picosecond time range, detected by both streak camera and single-photon counting methods. These data characterize the energy-transfer sequence from bacteriochlorophyll c (BChl c), found in membrane-associated antenna structures called chlorosomes, to BChl a in the chlorosome baseplate, then to a BChl a antenna complex in the cytoplasmic membrane, and finally to the photochemical reaction center. Upon selective excitation of BChl c in chlorosomes, the decay time of the emission arising from BChl c was 16 ps. The apparent rise time of the emission from the baseplate pigment was <3 ps.

Original languageEnglish (US)
Pages (from-to)7503-7509
Number of pages7
JournalJournal of Physical Chemistry
Volume93
Issue number21
StatePublished - Jan 1 1989
Externally publishedYes

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Excitation energy
bacteria
Bacteria
antennas
Antennas
Membranes
Streak cameras
Photochemical reactions
Pigments
Energy transfer
excitation
Photons
Fluorescence
membranes
streak cameras
energy
pigments
photochemical reactions
counting
energy transfer

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Mimuro, M., Nozawa, T., Tamai, N., Shimada, K., Yamazaki, I., Lin, S., ... Blankenship, R. E. (1989). Excitation energy flow in chlorosome antennas of green photosynthetic bacteria. Journal of Physical Chemistry, 93(21), 7503-7509.

Excitation energy flow in chlorosome antennas of green photosynthetic bacteria. / Mimuro, Mamoru; Nozawa, Tsunenori; Tamai, Naoto; Shimada, Keizou; Yamazaki, Iwao; Lin, Su; Knox, Robert S.; Wittmershaus, Bruce P.; Brune, Daniel C.; Blankenship, Robert E.

In: Journal of Physical Chemistry, Vol. 93, No. 21, 01.01.1989, p. 7503-7509.

Research output: Contribution to journalArticle

Mimuro, M, Nozawa, T, Tamai, N, Shimada, K, Yamazaki, I, Lin, S, Knox, RS, Wittmershaus, BP, Brune, DC & Blankenship, RE 1989, 'Excitation energy flow in chlorosome antennas of green photosynthetic bacteria', Journal of Physical Chemistry, vol. 93, no. 21, pp. 7503-7509.
Mimuro M, Nozawa T, Tamai N, Shimada K, Yamazaki I, Lin S et al. Excitation energy flow in chlorosome antennas of green photosynthetic bacteria. Journal of Physical Chemistry. 1989 Jan 1;93(21):7503-7509.
Mimuro, Mamoru ; Nozawa, Tsunenori ; Tamai, Naoto ; Shimada, Keizou ; Yamazaki, Iwao ; Lin, Su ; Knox, Robert S. ; Wittmershaus, Bruce P. ; Brune, Daniel C. ; Blankenship, Robert E. / Excitation energy flow in chlorosome antennas of green photosynthetic bacteria. In: Journal of Physical Chemistry. 1989 ; Vol. 93, No. 21. pp. 7503-7509.
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