A fifth chloroplast-encoded polypeptide is present in the photosystem II reaction centre complex

A. N. Webber, L. Packman, D. J. Chapman, J. Barber, J. C. Gray

Research output: Contribution to journalArticle

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The small polypeptides present in the pea photosystem II reaction centre complex have been separated by high-resolution SDS-polyacrylamide gel electrophoresis and characterised by N-terminal amino acid sequencing. Two polypeptides are identified as the α- and β-subunits of cytochrome b559 which are the products of the pdbE and psbF genes. A third polypeptide, of 4.5 kDA, is identified as the product of a small open reading frame in chloroplast DNA. The gene for this polypeptide, psbI, is located just downstream of the psbK gene chloroplast DNA.

Original languageEnglish (US)
Pages (from-to)259-262
Number of pages4
JournalFEBS Letters
Issue number2
StatePublished - Jan 2 1989



  • (Pea)
  • Cytochrome b-559
  • Gene, psbE
  • Gene, psbF
  • Gene, psbI
  • Photosystem II reaction center

ASJC Scopus subject areas

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

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