M. A. Arabtseva

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High-purity preparations of malate dehydrogenase (EC 1.1.1.37) were obtained by multistage purification from the bacterium Sphaerotilus sp. strain D-507 growing under different conditions. Under organotrophic conditions, the enzyme was dimeric; under mixotrophic conditions, dimeric and trimeric. On the basis of studied properties of the enzyme preparations,(More)
Electrophoretically homogenous preparations of malate dehydrogenase (MDH) isoforms of the bacteria Sphaerotilus natans D-507 with specific activity 7.46 U/mg and 5.74 U/mg with respect to protein concentration have been obtained. The dimeric isoform of the enzyme was shown to function under organotrophic growth conditions, whereas the tetrameric isoform was(More)
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