title: [Separation and analysis of immunochemical properties of multiple forms of cytochrome P-450 from the rat liver].
abstract: Four cytochromes P-450 induced by phenobarbital (PB-1--PB-4) and two cytochromes P-450 induced by S-methylcholanthrene (MC-1, MC-2) were purified to electrophoretic homogeneity from rat liver microsomes. The purification procedure involved sequential chromatography on n-aminooctyl-Sepharose 4B, DEAE-Sephacel and hydroxylapatite columns. The spectral and immunochemical properties of the cytochromes P-450 were estimated. All, but MC-1, cytochromes P-450 were found to exist in a low spin state. Using the Ouchterlony double diffusion method, it was shown that all cytochromes P-450 under study can be divided into two groups, i. e., PB-1--PB-2 and PB-3--PB-4, sharing common antigenic determinants inside the groups. High performance liquid chromatography of PB-3 and MC-2 on anion-exchangers yielded two additional peaks from the PB-induced major cytochrome P-450 PB-3 and three peaks from the MC-induced major cytochrome P-450 MC-2. The multiplicity of cytochrome P-450 forms is discussed.
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D003577:Cytochrome P-450 Enzyme System / Q000096:biosynthesis / Q000276:immunology / Q000302:isolation & purification*; D004790:Enzyme Induction; D005779:Immunodiffusion; D007527:Isoenzymes / Q000096:biosynthesis / Q000276:immunology / Q000302:isolation & purification*; D008099:Liver / Q000201:enzymology*; D008297:Male; D008748:Methylcholanthrene / Q000494:pharmacology; D010634:Phenobarbital / Q000494:pharmacology; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D007527:Isoenzymes; D008748:Methylcholanthrene; D003577:Cytochrome P-450 Enzyme System; D010634:Phenobarbital
vernacular_title: Razdelenie i issledovanie immunokhimicheskikh svoĭstv mnozhestvennykh form tsitokhroma P-450 pecheni krys.