Literature DB >> 113247

Effects of calcium-EGTA buffers on active calcium transport in inside-out red cell membrane vesicles.

B Sarkadi, A Schubert, G Gárdos.   

Abstract

In inside-out red cell membrane vesicles, the free calcium concentration half-maximally stimulating active calcium uptake is about 2 orders of magnitude smaller in a calcium-EGTA buffer than in media containing unbuffered calcium. In calcium-EGTA buffer, the maximum rate of calcium uptake is determined by the total calcium concentration present. A possible model for explaining these findings is presented.

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Year:  1979        PMID： 113247     DOI： 10.1007/bf01949932

Source DB:  PubMed          Journal:  Experientia        ISSN： 0014-4754


  6 in total

1.  Plasma membrane Ca2+ transport: stimulation by soluble proteins.

Authors:  T R Hinds; F L Larsen; F F Vincenzi
Journal:  Biochem Biophys Res Commun       Date:  1978-03-30       Impact factor: 3.575

2.  Association of (Ca + Mg)-ATPase activity with ATP-dependent Ca uptake in vesicles prepared from human erythrocytes.

Authors:  E E Quist; B D Roufogalis
Journal:  J Supramol Struct       Date:  1977

3.  Dependence on calcium concentration and stoichiometry of the calcium pump in human red cells.

Authors:  H J Schatzmann
Journal:  J Physiol       Date:  1973-12       Impact factor: 5.182

4.  Studies on a Ca 2+ -dependent ATPase of human erythrocyte membranes. Effects of Ca 2+ and H + .

Authors:  H U Wolf
Journal:  Biochim Biophys Acta       Date:  1972-05-09

5.  Stimulation of calcium transport in inside-out vesicles of human erythrocyte membranes by a soluble cytoplasmic activator.

Authors:  J D Macintyre; J W Green
Journal:  Biochim Biophys Acta       Date:  1978-07-04

6.  Kinetics of active calcium transport in inside-out red cell membrane vesicles.

Authors:  B Sarkadi; J D Macintyre; G Gárdos
Journal:  FEBS Lett       Date:  1978-05-01       Impact factor: 4.124
  6 in total
  4 in total

1.  Modulation of active Ca2+ uptake by the islet-cell endoplasmic reticulum.

Authors:  J R Colca; N Kotagal; P E Lacy; M L McDaniel
Journal:  Biochem J       Date:  1983-04-15       Impact factor: 3.857

2.  Sodium- and adenosine-triphosphate-dependent calcium movements in membrane vesicles prepared from dog erythrocytes.

Authors:  O E Ortiz; R A Sjodin
Journal:  J Physiol       Date:  1984-09       Impact factor: 5.182

3.  Calmodulin activation of the Ca2+ pump revealed by fluorescent chelator dyes in human red blood cell ghosts.

Authors:  M R James-Kracke
Journal:  J Gen Physiol       Date:  1992-01       Impact factor: 4.086

4.  The effect of calmodulin on the phosphoprotein intermediate of Mg2+-dependent Ca2+-stimulated adenosine triphosphatase in human erythrocyte membranes.

Authors:  D A Jeffery; B D Roufogalis; S Katz
Journal:  Biochem J       Date:  1981-02-15       Impact factor: 3.857
  4 in total

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