title: [Metabolism and various properties of proteinase controlling catalase metabolism in rat liver mitochondria].
abstract: The Mg,ATP-dependent serine proteinase (Mr = 50 kD; pH optimum 8.0) was isolated and purified 750-fold. The substrate specificity of the enzyme to some protein substrates (catalase, aldolase, uratoxidase, superoxide dismutase, albumin, cytochrome c, insulin) was investigated. The proteinase shows an affinity for proteins whose molecular mass is more than 100 kD. Some quantitative parameters of the enzyme metabolism, e.g., rate constants for synthesis and degradation of serine proteinase and the time of functioning of the de novo synthesized protein, were investigated.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002374:Catalase / Q000037:antagonists & inhibitors / Q000378:metabolism*; D002850:Chromatography, Gel; D004589:Electrophoresis, Disc; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007700:Kinetics; D008297:Male; D008930:Mitochondria, Liver / Q000201:enzymology*; D008970:Molecular Weight; D011480:Protease Inhibitors; D051381:Rats; D012697:Serine Endopeptidases / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D011480:Protease Inhibitors; D000255:Adenosine Triphosphate; D002374:Catalase; D012697:Serine Endopeptidases
vernacular_title: Izuchenie obmena i nekotorykh svoĭstv proteinazy, kontroliruiushcheĭobmen katalazy v mitokhondriiakh pecheni krys.