title: Radiometric assay for direct quantitation of rat liver cytochrome P-450b using monoclonal antibodies.
abstract: A simple and sensitive assay has been developed that is capable of detecting as little as 0.2 ng of the major isozyme of cytochrome P-450 (P-450b) isolated from the livers of phenobarbital-induced rats. This assay employs monoclonal antibodies generated against cytochrome P-450b to directly quantify the levels of this enzyme in various tissues. Separation of bound from free labeled antibody is achieved by using 6,9-diaminoacridine lactate (Rivanol). The useful range of the assay is between 1 and 100 ng of P-450b.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D003577:Cytochrome P-450 Enzyme System / Q000032:analysis*; D004975:Ethacridine / Q000031:analogs & derivatives; D007527:Isoenzymes / Q000032:analysis*; D008099:Liver / Q000201:enzymology*; D008862:Microsomes, Liver / Q000201:enzymology; D008930:Mitochondria, Liver / Q000201:enzymology; D011817:Rabbits; D011863:Radioimmunoassay; D051381:Rats
chemical_list: D000911:Antibodies, Monoclonal; D007527:Isoenzymes; D003577:Cytochrome P-450 Enzyme System; D004975:Ethacridine