The Structure and Function of Photosystem II

  • Wim Vermaas
Part of the NATO ASI Series book series (NSSA, volume 168)


Photosystem II (PS II) is a pigment-protein complex in thylakoid membranes from all oxygenic photosynthetic organisms (cyanobacteria and photosynthetic eukaryotes). It catalyzes the light-induced reduction of plastoquinone by water through a number of redox reactions. The electron transport chain in PS II is composed of various protein-bound components, which are held in close proximity and suitable orientation with respect to each other by the protein environment, so that a rapid and efficient electron transport is feasible. The PS II complex consists of at least five integral membrane proteins in the thylakoid (together forming the PS II “core complex”), in addition to several peripheral proteins. Many of these polypeptides interact with one or more components of the electron transport chain or with light-harvesting pigments, such that these protein ligands can fulfill a specific function in PS II.


Oxygen Evolution Purple Bacterium Herbicide Resistance Primary Charge Separation Bacterial Reaction Center 
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Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • Wim Vermaas
    • 1
  1. 1.Department of BotanyArizona State UniversityTempeUSA

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