Biological incorporation of alternative quinones into photosystem I

T. Wade Johnson, John H. Golbeck

Research output: Chapter in Book/Report/Conference proceedingChapter


All well-characterized photosynthetic reaction centers contain quinone molecules. Type II reaction centers, such as Photosystem II (PS II), contain two quinones, one that functions as a bound one-electron acceptor, and the other that functions as a mobile two-electron (and two-proton) accumulator. In PS II, plastoquinone-9 (PQ-9) serves the role of the mobile quinone, which shuttles electrons to Photosystem I (PS I) via the cytochrome b f complex. Type I reaction centers, such as PS I of cyanobacteria and green plants, contain two bound phylloquinones (PhQ - vitamin K, 2-methyl-3-phytyl-1,4-naphthoquinone).

Original languageEnglish (US)
Title of host publicationCRC Handbook of
Subtitle of host publicationOrganic Photochemistry and Photobiology, Second Edition
PublisherCRC Press
ISBN (Electronic)9780203495902
ISBN (Print)0849313481, 9780849313486
StatePublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


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