Effect of the method of cell disintegration on the aspartate kinase activity of preparations from Bacillus polymyxa var. Ross
Chigaleĭchuk, A.G.; Vinogradov, B.D.; Nefelova, M.V.
Prikladnaia Biokhimiia i Mikrobiologiia 11(5): 742-745
1975
ISSN/ISBN: 0555-1099 PMID: 171645 Document Number: 86668
The influence of methods of cell disintegration of Bac. polymyxa on aspartate kinase activity (EC 2.7.2.4) was examined. The disruption by means of the Hews press yielded a more active preparation as compared with ultrasonic disintegration. The supernatant treatment with streptomycin sulphate increased the preparation activity 2-fold. Dialysis of the fraction with a high activity of aspartate kinase inactivated the enzyme by 80--85%. The relationship between the aspartate kinase activity and the portein and ATP concentration in the reaction mixture was established.