465D:
reference: Crystal structure of the topoisomerase II poison 9-amino-[N-(2-dimethylamino)ethyl]acridine-4-carboxamide bound to the DNA hexanucleotide d(CGTACG)2., Adams A, Guss JM, Collyer CA, Denny WA, Wakelin LP, Biochemistry 1999 Jul 20;38(29):9221-33. PMID: 10413496

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