2KY7:
reference: NMR structural studies on the covalent DNA binding of a pyrrolobenzodiazepine-naphthalimide conjugate., Rettig M, Langel W, Kamal A, Weisz K, Org Biomol Chem. 2010 Jul 21;8(14):3179-87. Epub 2010 May 20. PMID: 20490406

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