title: Hydrocarbon hydroxylation system in liver microsomes from four animal species.
abstract: The in vitro metabolism of n-heptadecane was investigated using hepatic microsomes from Hubbard chickens, New Zealand rabbits, Wistar rats and rainbow trout. Incubations with the 14C-labelled alkane for 1 hr showed that the rate of oxidation varied between species; the rate (per mg protein) in chickens was roughly 20-fold greater than the rate in trout, and roughly 10-fold greater than the rates in rats and rabbits. On the basis of cytochrome P-450 content, the rate of heptadecane metabolism was roughly 20-fold greater in the chicken than in the other species. Moreover, the lambda max Soret band of the reduced cytochrome P-450 CO-complex was observed at 452 nm in the chicken. Correlation between the rate of heptadecane metabolism and in vivo storage levels is discussed.
mesh_terms: D000473:Alkanes / Q000378:metabolism; D000818:Animals; D002645:Chickens; D002855:Chromatography, Thin Layer; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism; D006838:Hydrocarbons / Q000378:metabolism*; D006900:Hydroxylation; D066298:In Vitro Techniques; D008297:Male; D008862:Microsomes, Liver / Q000201:enzymology / Q000378:metabolism*; D011817:Rabbits; D051381:Rats; D011919:Rats, Inbred Strains; D013045:Species Specificity; D013997:Time Factors; D014337:Trout
chemical_list: D000473:Alkanes; D006838:Hydrocarbons; D003577:Cytochrome P-450 Enzyme System; C016486:heptadecane