PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8848008-0 1995 Mechanism of cytochrome P450 2D6-catalyzed sparteine metabolism in humans. Sparteine 43-52 cytochrome P450 2D6 Homo sapiens 13-32 8848008-1 1995 Two different reaction mechanisms for the formation of the two human enamine-structured sparteine metabolites by cytochrome P450 2D6 have been discussed in the literature. Sparteine 88-97 cytochrome P450 2D6 Homo sapiens 113-132 8848008-7 1995 However, results of competitive and noncompetitive experiments revealed the presence of a nondissociative enzymatic mechanism for the formation of the two sparteine metabolites, i.e., the sparteine molecule that is bound to the substrate binding site of cytochrome P450 2D6 performs orientational changes without dissociating from the activated enzyme/substrate complex before the product-determining first irreversible reaction step. Sparteine 155-164 cytochrome P450 2D6 Homo sapiens 254-273 8848008-7 1995 However, results of competitive and noncompetitive experiments revealed the presence of a nondissociative enzymatic mechanism for the formation of the two sparteine metabolites, i.e., the sparteine molecule that is bound to the substrate binding site of cytochrome P450 2D6 performs orientational changes without dissociating from the activated enzyme/substrate complex before the product-determining first irreversible reaction step. Sparteine 188-197 cytochrome P450 2D6 Homo sapiens 254-273 8363993-4 1993 In man, tropisetron metabolism is linked to the cytochrome P-450 2D6 isoenzyme system, which determines the polymorphism of debrisoquine/sparteine metabolism. Sparteine 137-146 cytochrome P450 2D6 Homo sapiens 48-68