RT Journal Article SR Electronic T1 ENZYMATIC PATHWAY FOR THE FORMATION OF COTININE, A MAJOR METABOLITE OF NICOTINE IN RABBIT LIVER JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 94 OP 100 VO 129 IS 1 A1 H. B. Hucker A1 J. R. Gillette A1 B. B. Brodie YR 1960 UL http://jpet.aspetjournals.org/content/129/1/94.abstract AB A main reaction of nicotine metabolism in rabbit appears to be hydroxylation in the alpha position of the pyrrolidine ring to form a hydroxynicotine. This oxidation occurs in liver microsomes and requires TPNH and O2; the product has the properties of a cyclized amino aldehyde. The hydroxynicotine then undergoes oxidation to cotinine, a reaction that may be catalyzed by an aldehyde oxidase.