title: [Localization of cytochrome b566 at the outer surface of the inner mitochondrial membrane].
abstract: The membrane-impermeable protein reagent p-diazonium benzene sulfonate (DABS) inhibits the mitochondrial respiratory chain in the cytochromes b-c1 region. It has been shown that DABS-treatment brings about a dramatic change in a low-temperature absorption spectrum of rat liver mictochondria, so that the long-wavelength alpha-band of ferrocytochrome b566 is sharply decreased, which is indicative of this hemoprotein modification. This observation suggest that cytochrome b566 is accessible to DABS at the outer surface of the coupling mitochondrial membrane.
mesh_terms: D000818:Animals; D003573:Cytochrome b Group; D003580:Cytochromes / Q000032:analysis*; D003979:Diazonium Compounds; D007425:Intracellular Membranes / Q000032:analysis; D008930:Mitochondria, Liver / Q000378:metabolism*; D051381:Rats; D013053:Spectrophotometry; D013425:Sulfanilic Acids / Q000031:analogs & derivatives
chemical_list: D003573:Cytochrome b Group; D003580:Cytochromes; D003979:Diazonium Compounds; D013425:Sulfanilic Acids; C020730:cytochrome b566; C000469:diazobenzenesulfonic acid
vernacular_title: Lokalizatsiia tsitokhroma b566 na vneshneĭ storone spriagaiushcheĭ membrany mitokhondriĭ.