Literature DB >> 1125221

Mitochondrial oxygen affinity as a function of redox and phosphate potentials.

H F Bienfait, J M Jacobs, E C Slater.   

Abstract

1. The conditions under which mitochondria might catalyse a net reversal of oxidative phosphorylation are analysed. 2. Rat-liver mitochondria, incubated under such conditions, show a strongly diminished affinity for oxygen. 3. The velocity of respiration under these conditions is a hyperbolic function of the oxygen concentration. 4. The K-m for oxygen is less than 0.1 muM at low phosphate potential, irrespective of substrate, and 1-3 muM under reversal conditions. 5. The observed kinetics can be accounted for in a simple mechanism for cytochrome oxidase action.

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Year:  1975        PMID: 1125221     DOI: 10.1016/0005-2728(75)90166-8

Source DB:  PubMed          Journal:  Biochim Biophys Acta        ISSN: 0006-3002


  8 in total

1.  Bioenergetics of the heart at high altitude: environmental hypoxia imposes profound transformations on the myocardial process of ATP synthesis.

Authors:  Baltazar D Reynafarje; Emilio Marticorena
Journal:  J Bioenerg Biomembr       Date:  2002-12       Impact factor: 2.945

2.  An investigation of the relationships between rate and driving force in simple uncatalysed and enzyme-catalysed reactions with applications of the findings to chemiosmotic reactions.

Authors:  C D Stoner
Journal:  Biochem J       Date:  1992-04-15       Impact factor: 3.857

3.  Differential Interaction of Myoglobin with Select Fatty Acids of Carbon Chain Lengths C8 to C16.

Authors:  Thomas Jue; Lifan Shih; Youngran Chung
Journal:  Lipids       Date:  2017-06-21       Impact factor: 1.880

4.  Modeling the detailed kinetics of mitochondrial cytochrome c oxidase: Catalytic mechanism and nitric oxide inhibition.

Authors:  Venkat R Pannala; Amadou K S Camara; Ranjan K Dash
Journal:  J Appl Physiol (1985)       Date:  2016-09-15

Review 5.  Regulation of energy metabolism in liver.

Authors:  S Soboll
Journal:  J Bioenerg Biomembr       Date:  1995-12       Impact factor: 2.945

6.  Maintenance of mitochondrial oxygen homeostasis by cosubstrate compensation.

Authors:  Hao Yuan Kueh; Philipp Niethammer; Timothy J Mitchison
Journal:  Biophys J       Date:  2013-03-19       Impact factor: 4.033

7.  Dependence of mitochondrial and cytosolic adenine nucleotides on oxygen partial pressure in isolated hepatocytes. Application of a new rapid high pressure filtration technique for fractionation.

Authors:  H Hummerich; H de Groot; T Noll; S Soboll
Journal:  Biochem J       Date:  1988-03-15       Impact factor: 3.857

8.  Response of cyt a,a3 in the situ canine heart to transient ischemic episodes.

Authors:  T R Snow; L H Kleinmann; J C LaManna; A S Wechsler; F F Jöbsis
Journal:  Basic Res Cardiol       Date:  1981 May-Jun       Impact factor: 17.165

  8 in total

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