Comparison of bacterial reaction centers and photosystem II

László Kálmán, Joann C. Williams, James P. Allen

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In photosynthetic organisms, the utilization of solar energy to drive electron and proton transfer reactions across membranes is performed by pigment-protein complexes including bacterial reaction centers (BRCs) and photosystem II. The well-characterized BRC has served as a structural and functional model for the evolutionarily-related photosystem II for many years. Even though these complexes transfer electrons and protons across cell membranes in analogous manners, they utilize different secondary electron donors. Photosystem II has the unique ability to abstract electrons from water, while BRCs use molecules with much lower potentials as electron donors. This article compares the two complexes and reviews the factors that give rise to the functional differences. Also discussed are the modifications that have been performed on BRCs so that they perform reactions, such as amino acid and metal oxidation, which occur in photosystem II.

Original languageEnglish
Pages (from-to)643-655
Number of pages13
JournalPhotosynthesis Research
Volume98
Issue number1-3
DOIs
Publication statusPublished - Oct 2008

Fingerprint

Photosystem II Protein Complex
photosystem II
electrons
Electrons
protons
Protons
solar energy
Solar Energy
autotrophs
Proton transfer
electron transfer
Structural Models
cell membranes
Cell membranes
Pigments
Solar energy
pigments
metals
oxidation
amino acids

Keywords

  • Manganese
  • Oxygen evolving complex
  • Photosynthesis
  • Purple bacteria
  • Reaction center
  • Rhodobacter sphaeroides
  • Tyrosine oxidation

ASJC Scopus subject areas

  • Plant Science
  • Cell Biology
  • Biochemistry

Cite this

Comparison of bacterial reaction centers and photosystem II. / Kálmán, László; Williams, Joann C.; Allen, James P.

In: Photosynthesis Research, Vol. 98, No. 1-3, 10.2008, p. 643-655.

Research output: Contribution to journalArticle

Kálmán, László ; Williams, Joann C. ; Allen, James P. / Comparison of bacterial reaction centers and photosystem II. In: Photosynthesis Research. 2008 ; Vol. 98, No. 1-3. pp. 643-655.
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