title: [Immunological study of the identity of cytochrome P-448 in the mouse and rat liver after induction with 3-methylcholanthrene].
abstract: As shown by means of Ouchterlony double immunodiffusion technique after induction with 3-methyl cholanthrene the antibodies towards cytochrome P-448 from rat liver tissue developed a clear-cut precipitation line with homologous antigen and interacted also with cytochrome P-448 from mice liver tissue although the precipitation was less distinct. Antibodies towards mice liver cytochrome P-448 reacted also with the rat liver cytochrome P-448 but less distinctly as compared with the mice cytochrome. At the same time, these antibodies inhibited similarly the benz(a)-pyrene-hydroxylase reaction, catalyzed by both mice and rat cytochromes P-448. Partial immunological identity appears to occur in the cytochromes studied. Role of total antigenic determinants in enzymatic reactions catalyzed by cytochrome P-448 is discussed.
mesh_terms: D000818:Animals; D001564:Benzo(a)pyrene / Q000494:pharmacology; D011232:Chemical Precipitation; D019388:Cytochrome P-450 CYP1A2; D003577:Cytochrome P-450 Enzyme System / Q000096:biosynthesis*; D003580:Cytochromes / Q000096:biosynthesis*; D004790:Enzyme Induction; D005779:Immunodiffusion; D007527:Isoenzymes / Q000096:biosynthesis*; D008297:Male; D008748:Methylcholanthrene / Q000494:pharmacology*; D051379:Mice; D008810:Mice, Inbred C57BL; D008862:Microsomes, Liver / Q000201:enzymology*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D003580:Cytochromes; D007527:Isoenzymes; D001564:Benzo(a)pyrene; D008748:Methylcholanthrene; D003577:Cytochrome P-450 Enzyme System; C017170:Cyp1a2 protein, rat; D019388:Cytochrome P-450 CYP1A2
vernacular_title: Immunokhimicheskoe issledovanie identichnosti tsitokhromov P-448 pecheni mysheĭ i krys pri induktsii 3-metilkholantrenom.