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 journalArticle

5 Citations (Scopus)

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

Fingerprint

Cytochrome b Group
Chromatium
Cytochrome c Group
Cytochromes b
Carbon Monoxide
Cytochromes
Oxidoreductases
Cell Membrane
Electrons
Membranes
Photochemical reactions
Rieske iron-sulfur protein
cytochrome c-555

Keywords

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

ASJC Scopus subject areas

  • Biophysics

Cite this

The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum. / Wynn, R. Max; Kämpf, Charlotte; Gaul, Dale F.; Choi, Won Ki; Shaw, Robert W.; Knaff, David B.

In: BBA - Bioenergetics, Vol. 808, No. 1, 26.06.1985, p. 85-93.

Research output: Contribution to journalArticle

Wynn, R. Max ; Kämpf, Charlotte ; Gaul, Dale F. ; Choi, Won Ki ; Shaw, Robert W. ; Knaff, David B. / The membrane-bound electron-transfer components of aerobically grown Chromatium vinosum. In: BBA - Bioenergetics. 1985 ; Vol. 808, No. 1. pp. 85-93.
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