Constitution and energetics of photosystem i and photosystem II in the chlorophyll d-dominated cyanobacterium Acaryochloris marina

Tatsuya Tomo, Suleyman Allakhverdiev, Mamoru Mimuro

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

This mini review presents current topics of discussion about photosystem (PS) I and PS II of photosynthesis in the Acaryochloris marina. A. marina is a photosynthetic cyanobacterium in which chlorophyll (Chl) d is the major antenna pigment (>95%). However, Chl a is always present in a few percent. Chl d absorbs light with a wavelength up to 30 nm red-shifted from Chl a. Therefore, the chlorophyll species of the special pair in PS II has been a matter of debate because if Chl d was the special pair component, the overall energetics must be different in A. marina. The history of this field indicates that a purified sample is necessary for the reliable identification and characterization of the special pair. In view of the spectroscopic data and the redox potential of pheophytin, we discuss the nature of special pair constituents and the localization of the enigmatic Chl a.

Original languageEnglish
Pages (from-to)333-340
Number of pages8
JournalJournal of Photochemistry and Photobiology B: Biology
Volume104
Issue number1-2
DOIs
Publication statusPublished - Jul 1 2011
Externally publishedYes

Fingerprint

Photosystem II Protein Complex
constitution
Constitution and Bylaws
Cyanobacteria
chlorophylls
Pheophytins
Photosystem I Protein Complex
Photosynthesis
Chlorophyll
Oxidation-Reduction
History
Light
photosynthesis
chlorophyll a
chlorophyll d
pigments
antennas
histories
wavelengths

Keywords

  • Acaryochloris
  • Chlorophyll d
  • Energetics
  • Photosystem
  • Reaction center
  • Redox potential

ASJC Scopus subject areas

  • Biophysics
  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Cite this

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abstract = "This mini review presents current topics of discussion about photosystem (PS) I and PS II of photosynthesis in the Acaryochloris marina. A. marina is a photosynthetic cyanobacterium in which chlorophyll (Chl) d is the major antenna pigment (>95{\%}). However, Chl a is always present in a few percent. Chl d absorbs light with a wavelength up to 30 nm red-shifted from Chl a. Therefore, the chlorophyll species of the special pair in PS II has been a matter of debate because if Chl d was the special pair component, the overall energetics must be different in A. marina. The history of this field indicates that a purified sample is necessary for the reliable identification and characterization of the special pair. In view of the spectroscopic data and the redox potential of pheophytin, we discuss the nature of special pair constituents and the localization of the enigmatic Chl a.",
keywords = "Acaryochloris, Chlorophyll d, Energetics, Photosystem, Reaction center, Redox potential",
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AU - Tomo, Tatsuya

AU - Allakhverdiev, Suleyman

AU - Mimuro, Mamoru

PY - 2011/7/1

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N2 - This mini review presents current topics of discussion about photosystem (PS) I and PS II of photosynthesis in the Acaryochloris marina. A. marina is a photosynthetic cyanobacterium in which chlorophyll (Chl) d is the major antenna pigment (>95%). However, Chl a is always present in a few percent. Chl d absorbs light with a wavelength up to 30 nm red-shifted from Chl a. Therefore, the chlorophyll species of the special pair in PS II has been a matter of debate because if Chl d was the special pair component, the overall energetics must be different in A. marina. The history of this field indicates that a purified sample is necessary for the reliable identification and characterization of the special pair. In view of the spectroscopic data and the redox potential of pheophytin, we discuss the nature of special pair constituents and the localization of the enigmatic Chl a.

AB - This mini review presents current topics of discussion about photosystem (PS) I and PS II of photosynthesis in the Acaryochloris marina. A. marina is a photosynthetic cyanobacterium in which chlorophyll (Chl) d is the major antenna pigment (>95%). However, Chl a is always present in a few percent. Chl d absorbs light with a wavelength up to 30 nm red-shifted from Chl a. Therefore, the chlorophyll species of the special pair in PS II has been a matter of debate because if Chl d was the special pair component, the overall energetics must be different in A. marina. The history of this field indicates that a purified sample is necessary for the reliable identification and characterization of the special pair. In view of the spectroscopic data and the redox potential of pheophytin, we discuss the nature of special pair constituents and the localization of the enigmatic Chl a.

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KW - Reaction center

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