Literature DB >> 181747

A model for cytochrome oxidase.

G Palmer, G T Babcock, L E Vickery.   

Abstract

A model is proposed for the active center of cytochrome c oxidase (ferrocytochrome c:oxygen oxidoreductase, EC 1.9.3.1) in which cytochrome a is a low-spin ferrihemoprotein and cytochrome a3 is a high-spin ferrihemoprotein antiferromagnetically coupled to one of the two Cu2+ ions present in the enzyme. It is further proposed that reduction is accompanied by a conformational change in the enzyme thus exposing the sixth coordination site of cytochrome a3 to ligands. With this model it is possible to account for a variety of outstanding observations including the results of magnetic circular dichroism, Mossbauer, and electron paramagnetic resonance spectroscopies, as well as magnetic susceptibility measurements.

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Year:  1976        PMID： 181747      PMCID： PMC430498          DOI： 10.1073/pnas.73.7.2206

Source DB:  PubMed          Journal:  Proc Natl Acad Sci U S A        ISSN： 0027-8424            Impact factor:   11.205


  24 in total

1.  VALENCE STATE OF COPPER AFTER INTERACTION OF THE CYTOCHROME OXIDASE-CARBON MONOXIDE COMPLEX WITH FERRICYANIDE.

Authors:  D C WHARTON
Journal:  Biochim Biophys Acta       Date:  1964-12-23

2.  Reactions of cytochrome oxidase with oxygen and carbon monoxide.

Authors:  Q H GIBSON; C GREENWOOD
Journal:  Biochem J       Date:  1963-03       Impact factor: 3.857

3.  Properties of the copper associated with cytochrome oxidase as studied by paramagnetic resonance spectroscopy.

Authors:  H BEINERT; D E GRIFFITHS; D C WHARTON; R H SANDS
Journal:  J Biol Chem       Date:  1962-07       Impact factor: 5.157

4.  Biochemical and biophysical studies on cytochrome c oxidase. XX. Reaction with sulphide.

Authors:  R Wever; B F van GELDER; D V Dervartanian
Journal:  Biochim Biophys Acta       Date:  1975-05-15

5.  Copper(II) complex of sulfur-containing peptides. Characterization and similarity of electron spin resonance spectrum to the chromophore in blue copper proteins.

Authors:  Y Sugiura; Y Hirayama; H Tanaka; K Ishizu
Journal:  J Am Chem Soc       Date:  1975-09-17       Impact factor: 15.419

6.  On the magnetic properties of cobalt substituted bovine superoxide dismutase derivatives.

Authors:  T H Moss; J A Fee
Journal:  Biochem Biophys Res Commun       Date:  1975-09-16       Impact factor: 3.575

7.  Studies on the reconstitution of bovine erythrocyte superoxide dismutase. V. Preparation and properties of derivatives in which both zinc and copper sites contain copper.

Authors:  J A Fee; R G Briggs
Journal:  Biochim Biophys Acta       Date:  1975-08-19

8.  Functional intermediates in the reaction of membrane-bound cytochrome oxidase with oxygen.

Authors:  B Chance; C Saronio; J S Leigh
Journal:  J Biol Chem       Date:  1975-12-25       Impact factor: 5.157

9.  Oxido-reductive titrations of cytochrome c oxidase followed by EPR spectroscopy.

Authors:  C R Hartzell; H Beinert
Journal:  Biochim Biophys Acta       Date:  1976-02-16

10.  Crystal structure of bovine Cu,Zn superoxide dismutase at 3 A resolution: chain tracing and metal ligands.

Authors:  J Richardson; K A Thomas; B H Rubin; D C Richardson
Journal:  Proc Natl Acad Sci U S A       Date:  1975-04       Impact factor: 11.205
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  18 in total

1.  An analysis of the reaction kinetics of the hexahaem nitrite reductase of the anaerobic rumen bacterium Wolinella succinogenes.

Authors:  R S Blackmore; T Brittain; C Greenwood
Journal:  Biochem J       Date:  1990-10-15       Impact factor: 3.857

2.  Circular dichroic evidence for a conformational change in a cytochrome b--c1 complex by uncoupling agents.

Authors:  J Reed; T A Reed; B Hess
Journal:  Proc Natl Acad Sci U S A       Date:  1979-03       Impact factor: 11.205

3.  The kinetics and thermodynamics of the reaction of solid-state fully reduced membrane-bound cytochrome oxidase with carbon monoxide as studied by dual-wavelength multichannel spectroscopy and flash photolysis.

Authors:  M Clore; E M Chance
Journal:  Biochem J       Date:  1978-11-01       Impact factor: 3.857

4.  Cytochrome oxidase: an alternative model.

Authors:  C H Seiter; S G Angelos
Journal:  Proc Natl Acad Sci U S A       Date:  1980-04       Impact factor: 11.205

5.  Magnetic susceptibility studies of laccase and oxyhemocyanin.

Authors:  D M Dooley; R A Scott; J Ellinghaus; E I Solomon; H B Gray
Journal:  Proc Natl Acad Sci U S A       Date:  1978-07       Impact factor: 11.205

6.  The mechanism of reaction of fully reduced membrane-bound cytochrome oxidase with oxygen at 176K.

Authors:  G M Clore; E M Chance
Journal:  Biochem J       Date:  1978-09-01       Impact factor: 3.857

7.  Low-temperature kinetics of the reactions of fully reduced membrane-bound cytochrome oxidase with oxygen in the Soret, alpha and near-infrared regions.

Authors:  G M Clore; E M Chance
Journal:  Biochem J       Date:  1979-02-01       Impact factor: 3.857

8.  The mechanism of reaction of ferricyanide-pretreated mixed-valence-state membrane-bound cytochrome oxidase with oxygen at 173 K.

Authors:  G M Clore; E M Chance
Journal:  Biochem J       Date:  1978-09-01       Impact factor: 3.857

9.  Binding of ligands and spectral shifts in cytochrome c oxidase.

Authors:  P Nicholls; V Hildebrandt
Journal:  Biochem J       Date:  1978-07-01       Impact factor: 3.857

10.  Nucleotide sequence of the cybB gene encoding cytochrome b561 in Escherichia coli K12.

Authors:  H Nakamura; H Murakami; I Yamato; Y Anraku
Journal:  Mol Gen Genet       Date:  1988-04
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