title: In vitro effects of listerial hemolysin on rat brain mitochondria.
abstract: Crude hemolysin derived from Listeria monocytogenes, strains 9-125 and 1122-3, reduced phosphate utilization of rat brain mitochondria in a succinate system. Oxidation rates were not altered by addition of hemolysin to a concentration of 42 hemolytic units/ml, with a mitochondrial protein concentration of 2.3 mg/ml. At a mitochondrial protein concentration of 1.8 mg/ml, 42 hemolytic units/ml of hemolysin increased the inhibition of phosphate utilization and also reduced the oxygen uptake. An age differential was apparent, with mitochondria from young rats demonstrating uncoupling at a lower concentration of hemolysin.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism* / Q000648:ultrastructure; D006460:Hemolysin Proteins; D066298:In Vitro Techniques; D008089:Listeria monocytogenes; D008297:Male; D008928:Mitochondria / Q000378:metabolism*; D010101:Oxygen Consumption; D010710:Phosphates / Q000378:metabolism; D014176:Protein Biosynthesis; D051381:Rats
chemical_list: D006460:Hemolysin Proteins; D010710:Phosphates