Literature DB >> 3000774

Mechanism of control of cytochrome oxidase activity by the electrochemical-potential gradient.

M Brunori, P Sarti, A Colosimo, G Antonini, F Malatesta, M G Jones, M T Wilson.   

Abstract

Cytochrome c oxidation by bovine cytochrome oxidase embedded into liposomal vesicles with high respiratory control ratio (RCR = 6-10) has been studied by rapid-mixing experiments in the presence and absence of different ionophores. Kinetic analysis of the reaction indicates a linkage between the intrinsic activity of the enzyme, the efficiency of coupling and the electrochemical potential across the membrane. A simple model, based on two allosteric states with different catalytic properties in rapid equilibrium, is presented and successfully applied in the simulation of the observed time-course.

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Year:  1985        PMID： 3000774      PMCID： PMC554511          DOI： 10.1002/j.1460-2075.1985.tb03940.x

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


  15 in total

1.  Proton pump coupled to cytochrome c oxidase in mitochondria.

Authors:  M K Wikstrom
Journal:  Nature       Date:  1977-03-17       Impact factor: 49.962

2.  Studies on cytochrome oxidase. III. Improved preparation and some properties.

Authors:  T YONETANI
Journal:  J Biol Chem       Date:  1961-06       Impact factor: 5.157

Review 3.  Cytochrome c oxidase. Structure and catalytic activity.

Authors:  B G Malmström
Journal:  Biochim Biophys Acta       Date:  1979-12-13

4.  Comparative kinetic studies of cytochromes c in reactions with mitochondrial cytochrome c oxidase and reductase.

Authors:  B Errede; M D Kamen
Journal:  Biochemistry       Date:  1978-03-21       Impact factor: 3.162

5.  The proton pump of cytochrome c oxidase and its stoichiometry.

Authors:  E Sigel; E Carafoli
Journal:  Eur J Biochem       Date:  1978-08-15

6.  Stoichiometry of vectorial H+ movements coupled to electron transport and to ATP synthesis in mitochondria.

Authors:  A Alexandre; B Reynafarje; A L Lehninger
Journal:  Proc Natl Acad Sci U S A       Date:  1978-11       Impact factor: 11.205

7.  An allosteric model of hemoglobin. I. Kinetics.

Authors:  J J Hopfield; R G Shulman; S Ogawa
Journal:  J Mol Biol       Date:  1971-10-28       Impact factor: 5.469

8.  Temperature perturbation of the allosteric equilibrium in trout hemoglobin.

Authors:  M Brunori; B Giardina; A Colosimo; G Falcioni; S J Gill
Journal:  J Biol Chem       Date:  1980-05-10       Impact factor: 5.157

9.  Oxygen "pulsed" cytochrome c oxidase: functional properties and catalytic relevance.

Authors:  E Antonini; M Brunori; A Colosimo; C Greenwood; M T Wilson
Journal:  Proc Natl Acad Sci U S A       Date:  1977-08       Impact factor: 11.205

10.  Effect of funiculosin and antimycin A on the redox-driven H+-pumps in mitochondria: on the nature of "leaks'.

Authors:  D Pietrobon; G F Azzone; D Walz
Journal:  Eur J Biochem       Date:  1981-07
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  14 in total

1.  Modulation of cytochrome oxidase activity by inorganic and organic phosphate.

Authors:  F Malatesta; G Antonini; P Sarti; M Brunori
Journal:  Biochem J       Date:  1987-11-15       Impact factor: 3.857

Review 2.  Cytochrome oxidase as a proton pump.

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

3.  Control of respiration by cytochrome c oxidase in intact cells: role of the membrane potential.

Authors:  Maria Elena Dalmonte; Elena Forte; Maria Luisa Genova; Alessandro Giuffrè; Paolo Sarti; Giorgio Lenaz
Journal:  J Biol Chem       Date:  2009-09-23       Impact factor: 5.157

4.  The effect of non-esterified fatty acids on the proton-pumping cytochrome c oxidase reconstituted into liposomes.

Authors:  N Labonia; M Müller; A Azzi
Journal:  Biochem J       Date:  1988-08-15       Impact factor: 3.857

5.  Effect of gangliosides on membrane permeability studied by enzymic and fluorescence-spectroscopy techniques.

Authors:  P Sarti; G Antonini; F Malatesta; B Vallone; M Brunori; M Masserini; P Palestini; G Tettamanti
Journal:  Biochem J       Date:  1990-04-15       Impact factor: 3.857

Review 6.  Problems in the experimental determination of substrate-specific H+/O ratios during respiration.

Authors:  R W Hendler; R I Shrager
Journal:  J Bioenerg Biomembr       Date:  1987-10       Impact factor: 2.945

7.  Redox-linked proton translocation in cytochrome oxidase: the importance of gating electron flow. The effects of slip in a model transducer.

Authors:  D F Blair; J Gelles; S I Chan
Journal:  Biophys J       Date:  1986-10       Impact factor: 4.033

Review 8.  On the role of subunit III in proton translocation in cytochrome c oxidase.

Authors:  L J Prochaska; P S Fink
Journal:  J Bioenerg Biomembr       Date:  1987-04       Impact factor: 2.945

9.  ATP-induced spectral changes in cytochrome c oxidase. A kinetic investigation.

Authors:  G Antonini; F Malatesta; P Sarti; B Vallone; M Brunori
Journal:  Biochem J       Date:  1988-12-15       Impact factor: 3.857

10.  An arginine to lysine mutation in the vicinity of the heme propionates affects the redox potentials of the hemes and associated electron and proton transfer in cytochrome c oxidase.

Authors:  Denise A Mills; Lois Geren; Carrie Hiser; Bryan Schmidt; Bill Durham; Francis Millett; Shelagh Ferguson-Miller
Journal:  Biochemistry       Date:  2005-08-09       Impact factor: 3.162
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