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Related Experiment Videos

Photosystem II: the solid structural era.

K H Rhee1

  • 1Laboratory of Molecular Biology, Medical Research Council, Hills Road, Cambridge, CB2 2QH, United Kingdom. khrhee@mrc-lmb.cam.ac.uk

Annual Review of Biophysics and Biomolecular Structure
|May 8, 2001
PubMed
Summary
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The molecular structure of plant photosystem II is advancing, revealing key subunits and pigments. This structural insight aids understanding of oxygenic photosynthesis and its evolutionary links to other photosynthetic systems.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Photosynthesis Research

Background:

  • Oxygenic photosynthesis relies on the photosystem II (PSII) protein complex.
  • Understanding PSII's molecular structure is crucial for elucidating its role in photosynthesis.

Purpose of the Study:

  • To review recent structural findings of plant photosystem II.
  • To discuss photochemical reaction pathways within PSII.
  • To explore evolutionary connections between oxygenic and anoxygenic photosynthesis.

Main Methods:

  • Electron crystallography at 6 Å resolution.
  • Analysis of molecular structure and pigment associations.
  • Comparative framework analysis of photosynthetic reaction centers.

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Main Results:

  • A 6 Å resolution map of plant photosystem II has been obtained.
  • Key reaction center subunits and associated pigments have been assigned.
  • A common framework structure for photosynthetic reaction centers has been defined.

Conclusions:

  • Recent structural data provides significant insights into plant photosystem II.
  • Understanding PSII structure is key to deciphering oxygenic photosynthesis.
  • Defined framework structure aids in understanding evolutionary relationships in photosynthesis.