Literature DB >> 711680

Potentiometric titration of the high- and low-potential 4Fe-4S* centers of Azotobacter vinelandii ferredoxin I.

D C Yoch, R P Carithers.   

Abstract

The high-potential 4Fe-4S* center ofAzotobacter vinelandii ferredoxin I has been titrated potentiometrically by a reductive procedure. The absorbance decrease at 510 nm accompanying the reduction of the high-potential center titrated with an Em of 320 mV (n = 1). The low-potential 4Fe-4S* center was titrated by using the absorbance decrease at 410 nm to monitor its reduction. This center exhibited an Em of -424 mV (n = 1).

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Year:  1978        PMID： 711680      PMCID： PMC218614          DOI： 10.1128/jb.136.2.822-824.1978

Source DB:  PubMed          Journal:  J Bacteriol        ISSN： 0021-9193            Impact factor:   3.490


  6 in total

1.  Isolation and characterization of bound ion-sulfur proteins from bacterial photosynthetic membranes. I. Ferredoxins III and IV from Rhodospirillum rubrum chromatophores.

Authors:  D C Yoch; R P Carithers; D I Arnon
Journal:  J Biol Chem       Date:  1977-11-10       Impact factor: 5.157

2.  Iron-sulfur clusters and cysteine distribution in a ferredoxin from Azotobacter vinelandii.

Authors:  J B Howard; T Lorsbach; L Que
Journal:  Biochem Biophys Res Commun       Date:  1976-05-17       Impact factor: 3.575

3.  Two biologically active ferredoxins from the aerobic nitrogen-fixing bacteriu, Azotobacter vinelandii.

Authors:  D C Yoch; D I Arnon
Journal:  J Biol Chem       Date:  1972-07-25       Impact factor: 5.157

4.  Oxidation-reduction potential dependence of the interaction of cytochromes, bacteriochlorophyll and carotenoids at 77 degrees K in chromatophores of Chromatium D and Rhodopseudomonas gelatinosa.

Authors:  P L Dutton
Journal:  Biochim Biophys Acta       Date:  1971-01-12

5.  High and low reduction potential 4Fe-4S clusters in Azotobacter vinelandii (4Fe-4S) 2ferredoxin I. Influence of the polypeptide on the reduction potentials.

Authors:  W V Sweeney; J C Rabinowitz; D C Yoch
Journal:  J Biol Chem       Date:  1975-10-10       Impact factor: 5.157

6.  The electron transport system in nitrogen fixation by Azotobacter. II. Isolation and function of a new type of ferredoxin.

Authors:  D C Yoch; J R Benemann; R C Valentine; D I Arnon
Journal:  Proc Natl Acad Sci U S A       Date:  1969-12       Impact factor: 11.205
  6 in total
  2 in total

Review 1.  Bacterial iron-sulfur proteins.

Authors:  D C Yoch; R P Carithers
Journal:  Microbiol Rev       Date:  1979-09

2.  Spectroscopic studies of ferricyanide oxidation of Azotobacter vinelandii ferredoxin I.

Authors:  T V Morgan; P J Stephens; F Devlin; C D Stout; K A Melis; B K Burgess
Journal:  Proc Natl Acad Sci U S A       Date:  1984-04       Impact factor: 11.205
  2 in total

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