Voprosy meditsinskoi khimii (ISSN 0042-8809)

Potentiometric study of the progress of the glycogen synthetase reaction

   
Solov'eva G.A., Sakharova I.S.
PubMed Id: 6781142
Year: 1981 vol: 27  issue:1  pages: 96-99
Abstract: A procedure for continuous recording of the glycogen synthetase 1 activity, based on the potentiometry, is described. The stoichiometric ratio of H+/UDP, estimated at pH 7.8 and 30 degrees, was equal to 0.89 +/- 0.01. The specific activity of the enzyme did not depend on the buffer capacity in the incubation mixture containing 0.8-10 mM Tris-HCl, pH 7.8. The course of reaction had a linear type at the enzyme concentration of 4-20 mcg/ml in presence of 10 mM MgCl2. The rate of glycogen synthetase reaction was decreased in the course of experiment if the activator was absent. MgCl2 was more suitable activator than Na2SO4, universally accepted for this form of the enzyme.
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Reference: Solov'eva G.A., Sakharova I.S., Potentiometric study of the progress of the glycogen synthetase reaction, Voprosy meditsinskoi khimii, 1981, vol: 27(1), 96-99.
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