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  • Title: Selective elution of soluble rat liver glutathione transferases from a glutathione-Sepharose affinity column.
    Author: Dierickx PJ.
    Journal: J Chromatogr; 1990 Sep 14; 530(2):263-71. PubMed ID: 2079502.
    Abstract:
    Glutathione transferases (GST) are dimeric enzymes that take part in many detoxification processes. A previous report described the use of a glutathione-Sepharose affinity matrix for the purification of human liver GST. The method involved the use of 5 mM glutathione in a high pH buffer, and the yields were nearly 100%. This method and adapted techniques have now been applied to rat liver GST. Selective GST elution can be obtained in several different ways: by stepwise change of the pH and/or glutathione concentration, and by linear gradient elution. Gel electrophoresis showed, however, that none of the fractions contained pure GST isoenzymes. Also, less than 50% of the total rat liver GST was eluted with 5 mM glutathione, in contrast to the results with human liver GST. A glutathione concentration of 30 mM is necessary for quantitative desorption of rat liver GST from a glutathione-Sepharose column.
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