Literature DB >> 6234946

Unidirectional calcium and nucleotide fluxes in sarcoplasmic reticulum. I. Interpretation of flux ratios for different reaction schemes.

J J Feher.   

Abstract

The relation between unidirectional calcium and nucleotide fluxes was examined for different ATPase reaction schemes of the sarcoplasmic reticulum. The schemes considered differed in the order of sorption and desorption of calcium, ATP, and ADP. The results suggest that the theoretical relation between calcium and nucleotide fluxes depends on the reaction scheme and that experimental measurements can distinguish among them. The results obtained are generally valid and do not depend on assumptions of equilibrium or pseudoequilibrium between intermediate states of the pump.

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Year:  1984        PMID： 6234946      PMCID： PMC1434995          DOI： 10.1016/S0006-3495(84)84260-5

Source DB:  PubMed          Journal:  Biophys J        ISSN： 0006-3495            Impact factor:   4.033


  24 in total

1.  Partition analysis and the concept of net rate constants as tools in enzyme kinetics.

Authors:  W W Cleland
Journal:  Biochemistry       Date:  1975-07-15       Impact factor: 3.162

2.  On the mechanism of Ca2+-dependent adenosine triphosphatase of sarcoplasmic reticulum. Occurrence of two types of phosphoenzyme intermediates in the presence of KCl.

Authors:  M Shigekawa; A A Akowitz
Journal:  J Biol Chem       Date:  1979-06-10       Impact factor: 5.157

3.  ADP-sensitive and -insensitive phosphorylated intermediates of solubilized Ca2+,Mg2+-dependent ATPase of the sarcoplasmic reticulum from skeletal muscle.

Authors:  H Takisawa; Y Tonomura
Journal:  J Biochem       Date:  1979-08       Impact factor: 3.387

4.  Slow transition of phosphoenzyme from ADP-sensitive to ADP-insensitive forms in solubilized Ca2+, Mg2+-ATPase of sarcoplasmic reticulum: evidence for retarded dissociation of Ca2+ from the phosphoenzyme.

Authors:  Y Takakuwa; T Kanazawa
Journal:  Biochem Biophys Res Commun       Date:  1979-06-27       Impact factor: 3.575

5.  Reaction mechanism of Ca2+-dependent ATP hydrolysis by skeletal muscle sarcoplasmic reticulum in the absence of added alkali metal salts. III. Sequential occurrence of ADP-sensitive and ADP-insensitive phosphoenzymes.

Authors:  M Shigekawa; J P Dougherty
Journal:  J Biol Chem       Date:  1978-03-10       Impact factor: 5.157

6.  Comparison between ATP-supported and GTP-supported phosphate turnover of the calcium-transporting sarcoplasmic reticulum membranes.

Authors:  N Ronzani; A Migala; W Hasselbach
Journal:  Eur J Biochem       Date:  1979-11

7.  An algorithm for writing down flux equations for carrier kinetics, and its application to co-transport.

Authors:  W D Stein
Journal:  J Theor Biol       Date:  1976-10-21       Impact factor: 2.691

8.  Cooperative calcium binding and ATPase activation in sarcoplasmic reticulum vesicles.

Authors:  G Inesi; M Kurzmack; C Coan; D E Lewis
Journal:  J Biol Chem       Date:  1980-04-10       Impact factor: 5.157

9.  Transient kinetics of Ca2+ transport of sarcoplasmic reticulum. A comparison of cardiac and skeletal muscle.

Authors:  M Sumida; T Wang; F Mandel; J P Froehlich; A Schwartz
Journal:  J Biol Chem       Date:  1978-12-25       Impact factor: 5.157

10.  Reaction mechanism of calcium-ATPase of sarcoplasmic reticulum. Substrates for phosphorylation reaction and back reaction, and further resolution of phosphorylated intermediates.

Authors:  S Yamada; N Ikemoto
Journal:  J Biol Chem       Date:  1980-04-10       Impact factor: 5.157
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  1 in total

1.  A mathematical treatment of integrated Ca dynamics within the ventricular myocyte.

Authors:  Thomas R Shannon; Fei Wang; José Puglisi; Christopher Weber; Donald M Bers
Journal:  Biophys J       Date:  2004-09-03       Impact factor: 4.033
  1 in total

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