Structure of photosystems I and II

Petra Fromme, Ingo Grotjohann

Research output: Chapter in Book/Report/Conference proceedingChapter

26 Scopus citations


Photosynthesis is the major process that converts solar energy into chemical energy on Earth. Two and a half billion years ago, the ancestors of cyanobacteria were able to use water as electron source for the photosynthetic process, thereby evolving oxygen and changing the atmosphere of our planet Earth. Two large membrane protein complexes, Photosystems I and II, catalyze the primary step in this energy conversion, the light-induced charge separation across the photosynthetic membrane. This chapter describes and compares the structure of two Photosystems and discusses their function in respect to the mechanism of light harvesting, electron transfer and water splitting.

Original languageEnglish (US)
Title of host publicationBioenergetics
Subtitle of host publicationEnergy Conservation and Conversion
EditorsGünter Schäfer, Harvey Penefsky
Number of pages40
StatePublished - 2008

Publication series

NameResults and Problems in Cell Differentiation
ISSN (Print)0080-1844
ISSN (Electronic)1861-0412

ASJC Scopus subject areas

  • Developmental Biology
  • Cell Biology


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