Structure and function of thebc-complex ofRhodobacter sphaeroides

Antony Crofts, Beth Hacker, Blanca Barquera, Chang Hyon Yun, Robert Gennis

Research output: Contribution to journalArticlepeer-review


The ubiquinol: cytochromec2 oxidoreductase (bc-complex) ofRhodobacter sphaeroides has three main subunits, which bear the prosthetic groups, and contribute to three catalytic sites and internal electron transfer pathways which define the modified Q-cycle mechanism. In this paper, we report on progress in modelling the structure of thebc-complex, and experiments using site directed mutagenesis and biophysical assay to probe the structural and function consequences of specific modifications to these subunits.

Original languageEnglish (US)
Pages (from-to)162-165
Number of pages4
JournalBiochimica et Biophysica Acta - Bioenergetics
Issue number2
StatePublished - Jan 1 1992


  • Cytochromebc-complex
  • Rb sphaeroides
  • Site-directed mutagenesis
  • Ubiquinol cytochromec oxidoreductase

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology


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