Contents of cytochromes, quinones and reaction centers of photosystems I and II in a cyanobacterium synechococcus sp.

Meiko Aoki, Masahiko Hirano, Yuichiro Takahashi, Sakae Katoh

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The contents of photosystem I and photosystem II reaction centers, cytochrome c-553, cytochrome c-550, cytochrome f, cytochrome b-559, cytochrome b-563, plastoquinone and vitamin K1 in the cyanobacterium Synechococcus sp. were determined. About three photosystem I reaction centers were present for each photosystem II reaction center. The amounts of cytochromes functioning between the two photosystems were approximately half those of the photosystem I reaction center. Plastocyanin was not detected, while plastoquinone and vitamin K1 were present in excess of other electron carriers and reaction centers. The results indicate the importance of plastoquinone and cytochrome c-553 for cooperation of the two reaction centers through electron transport.

Original languageEnglish
Pages (from-to)517-525
Number of pages9
JournalPlant and Cell Physiology
Volume24
Issue number3
Publication statusPublished - Apr 1 1983
Externally publishedYes

Keywords

  • Cyanobacterium
  • Cytochrome c-553
  • Electron carriers
  • Photosynthetic electron transport
  • Reaction center of photosystem I and II
  • Synechococcus sp

ASJC Scopus subject areas

  • Physiology
  • Plant Science
  • Cell Biology

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