Lifetimes of photosystem i and II proteins in the cyanobacterium Synechocystis sp. PCC 6803

Danny C I Yao, Daniel C. Brune, Willem Vermaas

Research output: Contribution to journalArticle

31 Scopus citations


The half-life times of photosystem I and II proteins were determined using 15N-labeling and mass spectrometry. The half-life times (30-75 h for photosystem I components and <1-11 h for the large photosystem II proteins) were similar when proteins were isolated from monomeric vs. oligomeric complexes on Blue-Native gels, suggesting that the two forms of both photosystems can interchange on a timescale of <1 h or that only one form of each photosystem exists in thylakoids in vivo. The half-life times of proteins associated with either photosystem generally were unaffected by the absence of Small Cab-like proteins.

Original languageEnglish (US)
Pages (from-to)169-173
Number of pages5
JournalFEBS Letters
Issue number2
StatePublished - Jan 20 2012



  • Half-life time
  • Photosystem I
  • Photosystem II
  • Protein turnover
  • Small Cab-like protein

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology

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