2KTT:
reference: Solution structure of a covalently bound pyrrolo[2,1-c][1,4]benzodiazepine-benzimidazole hybrid to a 10mer DNA duplex., Rettig M, Weingarth M, Langel W, Kamal A, Kumar PP, Weisz K, Biochemistry. 2009 Dec 29;48(51):12223-32. PMID: 19911838

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