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  • Title: Reverse micelles as a versatile medium for the study of lactate dehydrogenase in vitro.
    Author: Katiyar SS, Awasthi AK, Kumar A.
    Journal: Biochem Int; 1988 Dec; 17(6):1165-70. PubMed ID: 3245846.
    Abstract:
    Rabbit muscle lactate dehydrogenase has been solubilized in cationic reverse micelles of cetyltrimethyl ammonium bromide (CTAB) and isooctane-chloroform (1:1, V/V). The activity of the enzyme was notably affected by the change in water pool, pH, and concentration of the surfactant. Lactate dehydrogenase showed its full activity in this reverse micellar system in non-aqueous solvent under specific conditions at a Wo value of 30.55, pH 7.0, and 100 mM CTAB in comparison to the activity measured in aqueous system under optimum conditions. These results indicate that even the large and complex enzymes (M.W. hundred thousand and four subunits) can be solubilized in apolar solvents where they may retain their conformational integrity and oligomericity, i.e., optimum subunit-subunit interaction with maintenance of full activity.
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