title: Reactions of potent mutagens, 3-amino-1-methyl-5H-pyrido[4,3-b]indole (Trp-P-2) and 2-amino-6-methyl-dipyrido[1,2-a:3',2'-d]imidazole (Glu-P-1) with nucleic acid.
abstract: Two potent mutagens, 3-amino-1-methyl-5H-pyrido[4,3-b]indole (Trp-P-2), isolated from a tryptophan pyrolysate, and 2-amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole (Glu-P-1), isolated from a glutamic acid pyrolysate, modified calf thymus DNA in the presence of rat liver microsomes. The major base modified by Trp-P-2 was identified wih 3-(3-guanyl)amino-1-methyl-5H-pyrido[4,3-b]indole. The major base modified by Glu-P-1 was identified with 2-(8-guanyl)amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole. N-acetoxy-Glu-P-1 efficiently modified DNA without microsomes.
mesh_terms: D000818:Animals; D001711:Biotransformation; D002243:Carbolines / Q000378:metabolism; D002417:Cattle; D004247:DNA; D007093:Imidazoles / Q000378:metabolism; D007211:Indoles / Q000378:metabolism; D008862:Microsomes, Liver / Q000378:metabolism*; D009153:Mutagens / Q000378:metabolism; D051381:Rats; D013950:Thymus Gland
chemical_list: D002243:Carbolines; D007093:Imidazoles; D007211:Indoles; D009153:Mutagens; C023785:2-amino-6-methyldipyrido(1,2-a-3',2'-d)imidazole; C019133:3-amino-1-methyl-5H-pyrido(4,3-b)indole; D004247:DNA