title: [Proteins of bacterial membranes. NADH-dehydrogenase from the cells of Acholeplasma laidlawii].
abstract: Using ion-exchange chromatography on DEAE-cellulose and gel filtration, a purified NADH-dehydrogenase was prepared from cell membranes of A. laidlawii. The enzyme specific activity exceeds the activity of the membrane preparation 45-fold. The enzyme is thermolabile and sensitive to lecithine. Electrophoresis of the enzyme preparation in the presence of Na-DS resulted in two proteins with Mr of 65 000 and 72 000. Specific staining of the gels with triphenyltetrasolium chloride in the presence of Triton X-100 revealed two protein bands, while in the presence of Triton X-100 and urea only one protein band was produced.
mesh_terms: D000128:Acholeplasma laidlawii / Q000201:enzymology*; D003579:Cytochrome Reductases / Q000378:metabolism*; D007700:Kinetics; D008565:Membrane Proteins / Q000302:isolation & purification; D008970:Molecular Weight; D009245:NADH Dehydrogenase / Q000302:isolation & purification / Q000378:metabolism*
chemical_list: D008565:Membrane Proteins; D003579:Cytochrome Reductases; D009245:NADH Dehydrogenase
vernacular_title: Belki bakterial'nykh membran. NADH-degidrogenaza kletok Acholeplasma laidlawii.