Home LiteratureArticle Details
PMID: 518554 Published · ppublish English Journal Article Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S.

The oxidation-reduction potentials of cytochrome o + c4 and cytochrome o purified from Azotobacter vinelandii.

The Biochemical journal ·Vol. 181 ·No. 3 ·1979-09-01 ·Pages 763-6

Yang T, O'Keefe D, Chance B

Abstract

Oxidation-reduction titrations of Azotobacter vinelandii cytochrome o + c4 and cytochrome o were performed with simultaneous potential and absorbance measurements under anaerobic conditions. Cytochrome c4 has a midpoint potential (Em, 7.4) of 260mV and purified cytochrome o has an Em, 7.4 of -18mV. Little change in the midpoint potential of cytochrome o was observed when titrated in the pH range 6.2--9.8.

MeSH Terms
Azotobacter/enzymology Cytochromes Oxidation-Reduction Spectrophotometry
Chemicals
Cytochromes
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Yang T
O'Keefe D
Chance B
References (13)
13 references, click to expand
  1. DISC ELECTROPHORESIS. II. METHOD AND APPLICATION TO HUMAN SERUM PROTEINS.
    Ann N Y Acad Sci. 1964 Dec 28;121:404-27 PMID: 14240539
  2. Photochemical determinations of the oxidases of bacteria.
    J Biol Chem. 1959 Jun;234(6):1587-92 PMID: 13654422
  3. New methods for the study of the carbon monoxide compounds of respiratory enzymes.
    Biochim Biophys Acta. 1953 Sep-Oct;12(1-2):289-98 PMID: 13115438
  4. Purification and characterization of cytochrome O from Azotobacter vinelandii.
    Biochim Biophys Acta. 1978 Jun 8;502(3):543-8 PMID: 207321
  5. Electron-accepting properties of cytochrome o purified from Vitreoscilla.
    J Biol Chem. 1978 Nov 10;253(21):7635-7 PMID: 701279
  6. The binding of cyanide and carbon monoxide to cytochrome o purified from Vitreoscilla. Evidence for subunit interaction in the reduced protein.
    J Biol Chem. 1978 Oct 10;253(19):6988-91 PMID: 690137
  7. Studies on the red oxidase (cytochrome o) of Azotobacter vinelandii.
    Biochem Biophys Res Commun. 1978 Apr 14;81(3):1032-9 PMID: 666783
  8. Purification and properties of cytochromes c of Azotobacter vinelandii.
    Biochim Biophys Acta. 1969 Aug 5;180(3):473-89 PMID: 4309367
  9. The cytochrome system of Azotobacter vinelandii.
    Biochim Biophys Acta. 1967 Sep 6;143(2):340-53 PMID: 4292889
  10. The respiratory chain of Azotobacter vinelandii. I. Spectral properites of cytochrome d.
    Biochim Biophys Acta. 1973 May 30;305(2):260-7 PMID: 4200350
  11. A cytochrome cc'-like haemoprotein isolated from Azotobacter vinelandii.
    Biochem Biophys Res Commun. 1972 Jan 14;46(1):150-4 PMID: 5006907
  12. Oxidation-reduction potential dependence of the interaction of cytochromes, bacteriochlorophyll and carotenoids at 77 degrees K in chromatophores of Chromatium D and Rhodopseudomonas gelatinosa.
    Biochim Biophys Acta. 1971 Jan 12;226(1):63-80 PMID: 5549985
  13. The purification and properties of cytochrome o from Vitreoscilla.
    J Biol Chem. 1966 Jul 25;241(14):3308-15 PMID: 5913119
Article Info
Journal
The Biochemical journal
Abbr.
Biochem J
ISSN
0264-6021
DOI
10.1042/bj1810763
Published
1979-09-01
Pages
763-6
Language
English
Region
England
NLM ID
2984726R
PMCID
PMC1161217
Subset
IM
External Links
PubMed source DOI: 10.1042/bj1810763 PMC Full Text View journal details
Analysis Services
Analysis Services

Contact

No. 2 Wenbo Road, Zhangqiu District, Jinan, Shandong

Qilu Normal University · Genelibs Bioinformatics Lab

750 Shunhua Rd, Jinan

2F, Bldg F, University Science Park

Tel: 0531-88819269

WeChat Official Account

Follow our WeChat subscription account for real-time updates and the latest in medical and biological research.


Business Email

E-mail: [email protected]

Copyright © 2026.Genelibs Jinan Honghui Biotechnology Co., Ltd. 鲁ICP备20007159号-2