Structure of Photosystem I: Suggestions on the docking sites for plastocyanin, ferredoxin and the coordination of P700

Petra Fromme, Wolf Dieter Schubert, Norbert Krauß

Research output: Contribution to journalReview article

76 Scopus citations

Abstract

Photosystem I of Synechococcus elongatus was crystallized showing maximal diffraction to 4 Å resolution (Witt et al. (1988) Ber. Bunsenges. Phys. Chem. 92, 1503-1506). The crystal structure has been determined at a resolution of 6 Å (Krauß et al. (1993) Nature 361, 326-331). Based on this structure, docking sites for plastocyanin and ferredoxin are proposed. The arrangement of helices is analysed in terms of hydrophobicity plots and homology to the reaction center of purple bacteria. A possible coordination of the primary donor P700 by the helices in subunits A and B is suggested based on the relative three-dimensional arrangement of the helices.

Original languageEnglish (US)
Pages (from-to)99-105
Number of pages7
JournalBBA - Bioenergetics
Volume1187
Issue number2
DOIs
StatePublished - Aug 30 1994
Externally publishedYes

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Keywords

  • Crystal
  • Ferredoxin
  • Photosynthesis
  • Photosystem I
  • Plastocyanin
  • X-ray structure

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology

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