The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum

R. Max Wynn, Charlotte Kämpf, Dale F. Gaul, Won Ki Choi, Robert W. Shaw, David B. Knaff

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The electron-transfer chain components of aerobically grown Chromatium vinosum have been characterized. Membranes isolated from aerobically grown C. vinosum have been shown to contain a Rieske iron-sulfur protein, at least three c-type cytochromes and at least one b-type cytochrome. Two cytochromes that bind CO appear to be present, one of which may function as a terminal oxidase. Membranes isolated from these cells appear to lack a photochemical reaction center and the high potential (Em = +340 mV) cytochrome c-555 that serves as the immediate donor to the reaction center in photosynthetically grown C. vinosum. In addition, the b-cytochrome(s) of aerobically grown C. vinosum has (have) been shown to be considerably more electronegative (E′m = -90 mV) than that of photosynthetically grown cells (E′m = +30 mV).

Original languageEnglish (US)
Pages (from-to)85-93
Number of pages9
JournalBBA - Bioenergetics
Volume808
Issue number1
DOIs
StatePublished - Jun 26 1985

Keywords

  • (C. vinosum)
  • Cytochrome
  • Electron transport
  • Iron-sulfur protein

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology

Fingerprint Dive into the research topics of 'The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum'. Together they form a unique fingerprint.

Cite this