Structural characterization of heme sites in spinach cytochrome b6f complexes: a resonance Raman study

J. David Hobbs, Max Wynn, David J. Nunez, Richard Malkin, David B. Knaff, Mark R. Ondrias

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5 Scopus citations


Resonance Raman spectra of cytochrome b6f complexes isolated from spinach chloroplasts have been obtained. Selective resonance enhancements and partial reductions of the complex by redox mediators were used to isolate and identify the contributions of heme b6 and heme f sites to the observed spectra. Corresponding spectra for turnip cytochrome f have also been obtained. Power-dependent photoreduction was observed in cytochrome f of the complex as well as in the isolated cytochrome f during the course of the Raman experiments.

Original languageEnglish (US)
Pages (from-to)37-44
Number of pages8
JournalBBA - Bioenergetics
Issue number1
StatePublished - Aug 2 1991


  • Cytochrome bf
  • Cytochrome f
  • Heme
  • Photoreduction
  • Resonance Raman

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology


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