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Nagaoka, Hiroaki,Wakabayashi, Keiji,Kim, Seon-Bong,Kim, In-Soo,Tanaka, Yoshino,Ochiai, Masako,Tada, Akihiro,Nukaya, Haruo,Sugimura Takashi,Nagao, Minako 國立統營水産專門大學 附設 水産科學硏究所 1993 수산과학연구소보고 Vol.4 No.-
We examined the reactivity of the N-hydroxyamino derivative of a carcinogenic heterocyclic amine, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), after its O-acetylation with four 2'-deoxyribonucleoside 3'-monophosphates. ^32P-Postlabeling analysis demonstrated that the levels of adducts with 2'-deoxyguanosine 3'-monophosphate were much higher than those with the other three nucleotides. ^IH-NMR, mass spectral and UV absorption spectral analyses of the major adducts formed by N-acetoxy-PhIP with 2'-deoxyguanosine and with its phosphate esters indicated that PhIP bound at the C-8 position of guanine, as previously demonstrated with other heterocyclic amines.