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The temperature dependence of the exchange transport of glucose in human erythrocytes
Author(s) -
Lacko L.,
Wittke B.,
Geck P.
Publication year - 1973
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.1040820209
Subject(s) - activation energy , arrhenius equation , entropy of activation , chemistry , thermodynamics , entropy (arrow of time) , energy exchange , biophysics , kinetics , reaction rate constant , physics , biology , atmospheric sciences , quantum mechanics
The temperature dependence of the uptake of glucose by exchange transport is investigated at two pH values (7.5 and 5). The Arrhenius's energy of activation, the heat of activation, the free energy of activation and the entropy of activation are calculated. The parameters are different at pH 7.5 and 5. For both pH levels the heat of activation and the entropy of activation change abruptly at 20°C. This finding leads us to assume that at this temperature a change in the structure of the membrane takes place.