Literature DB >> 6327262

The structure of the paramagnetic oxygen intermediate in the cytochrome c oxidase reaction.

O Hansson, B Karlsson, R Aasa, T Vänngård, B G Malmström.   

Abstract

A paramagnetic intermediate with an unusual e.p.r. spectrum is formed when fully reduced cytochrome c oxidase is allowed to react with dioxygen at 173 K. The effect on the e.p.r. spectrum of using dioxygen enriched in 17O was investigated. These experiments show that an oxygen atom derived from dioxygen is bound to Cu2+ in the intermediate. The e.p.r. parameters can be explained in terms of a weak antiferromagnetic interaction (J approximately equal to 10 cm-1) between Cu2+B and cytochrome a3 in the low-spin ferryl ion state. It is suggested that an OH- ion bound to Cu2+B is hydrogen bonded to the oxygen atom of the ferryl ion in cytochrome a3.

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Year:  1982        PMID： 6327262      PMCID： PMC553207          DOI： 10.1002/j.1460-2075.1982.tb01313.x

Source DB:  PubMed          Journal:  EMBO J        ISSN： 0261-4189            Impact factor:   11.598


  8 in total

1.  Horseradish peroxidase compound I: evidence for spin coupling between the heme iron and a 'free' radical.

Authors:  C E Schulz; P W Devaney; H Winkler; P G Debrunner; N Doan; R Chiang; R Rutter; L P Hager
Journal:  FEBS Lett       Date:  1979-07-01       Impact factor: 4.124

2.  17O hyperfine interaction in the EPR spectrum of fungal laccase A.

Authors:  J S Deinum; T Vänngård
Journal:  FEBS Lett       Date:  1975-10-15       Impact factor: 4.124

3.  Heme spin-states of cytochrome c oxidase derived from room temperature magnetic susceptibility measurements.

Authors:  K E Falk; T Vänngård; J Angström
Journal:  FEBS Lett       Date:  1977-03-15       Impact factor: 4.124

Review 4.  Enzymology of oxygen.

Authors:  B G Malmström
Journal:  Annu Rev Biochem       Date:  1982       Impact factor: 23.643

5.  An investigation by e.p.r. and optical spectroscopy of cytochrome oxidase during turnover.

Authors:  M T Wilson; P Jensen; R Aasa; B G Malmström; T Vänngård
Journal:  Biochem J       Date:  1982-05-01       Impact factor: 3.857

6.  Characterization of the low-temperature intermediates of the reaction of fully reduced soluble cytochrome oxidase with oxygen by electron-paramagnetic-resonance and optical spectroscopy.

Authors:  G M Clore; L E Andréasson; B Karlsson; R Aasa; B G Malmström
Journal:  Biochem J       Date:  1980-01-01       Impact factor: 3.857

7.  The identity of a new copper(II) electron paramagnetic resonance signal in cytochrome c oxidase.

Authors:  B Karlsson; L E Andréasson
Journal:  Biochim Biophys Acta       Date:  1981-03-12

8.  Mechanisms of oxidation with oxygen.

Authors:  H Taube
Journal:  J Gen Physiol       Date:  1965-09       Impact factor: 4.086
  8 in total
  7 in total

1.  On the role of the K-proton transfer pathway in cytochrome c oxidase.

Authors:  M Brändén; H Sigurdson; A Namslauer; R B Gennis; P Adelroth; P Brzezinski
Journal:  Proc Natl Acad Sci U S A       Date:  2001-04-10       Impact factor: 11.205

2.  Unraveling the role of metal ions and low catalytic activity of cytochrome C oxidase in Alzheimer's disease.

Authors:  Trevor Alleyne; Neetu Mohan; Jerome Joseph; Andrew Adogwa
Journal:  J Mol Neurosci       Date:  2010-08-20       Impact factor: 3.444

Review 3.  Cytochrome oxidase as a proton pump.

Authors:  M T Wilson; D Bickar
Journal:  J Bioenerg Biomembr       Date:  1991-10       Impact factor: 2.945

4.  Intramolecular single-turnover reaction in a cytochrome C oxidase model bearing a Tyr244 mimic.

Authors:  James P Collman; Richard A Decréau; Yilong Yan; Jungjoo Yoon; Edward I Solomon
Journal:  J Am Chem Soc       Date:  2007-04-13       Impact factor: 15.419

5.  A Water Dimer Shift Activates a Proton Pumping Pathway in the PR → F Transition of ba3 Cytochrome c Oxidase.

Authors:  Wen-Ge Han Du; Andreas W Götz; Louis Noodleman
Journal:  Inorg Chem       Date:  2018-01-08       Impact factor: 5.165

6.  DFT Fea3-O/O-O Vibrational Frequency Calculations over Catalytic Reaction Cycle States in the Dinuclear Center of Cytochrome c Oxidase.

Authors:  Wen-Ge Han Du; Andreas W Götz; Louis Noodleman
Journal:  Inorg Chem       Date:  2019-09-30       Impact factor: 5.165

7.  Toward a chemical mechanism of proton pumping by the B-type cytochrome c oxidases: application of density functional theory to cytochrome ba3 of Thermus thermophilus.

Authors:  James A Fee; David A Case; Louis Noodleman
Journal:  J Am Chem Soc       Date:  2008-10-17       Impact factor: 15.419
  7 in total

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