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  • Title: Genetic and biochemical characterization of mutants of Bacillus subtilis defective in succinate dehydrogenase.
    Author: Ohné M, Rutberg B, Hoch JA.
    Journal: J Bacteriol; 1973 Sep; 115(3):738-45. PubMed ID: 4199512.
    Abstract:
    Eleven succinate-accumulating mutants of Bacillus subtilis have been mapped by transformation and transduction crosses and characterized with respect to activities of citric acid cycle enzymes. These mutants could be divided into three genetic groups. Nine of the mutants were found to map between argA and leu in the citF locus. A second group was located between lys-1 and trpC2 and the third group could not be located on the B. subtilis chromosome in extensive transduction crosses. All of the citF mutants lack detectable succinate dehydrogenase activity, whereas both of the other groups show a reduced level of this enzyme. In addition, most of the mutants in the citF locus lack cytochrome a, whereas the level of this cytochrome is normal in the other two groups. A procedure has been devised for the solubilization of the succinate dehydrogenase from the membrane of B. subtilis with the non-ionic detergent Brij 58. Some properties of the soluble and bound forms of succinate dehydrogenase are described.
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