2QEF:
reference: A bridging water anchors the tethered 5-(3-aminopropyl)-2'-deoxyuridine amine in the DNA major groove proximate to the N+2 C.G base pair: implications for formation of interstrand 5'-GNC-3' cross-links by nitrogen mustards., Wang F, Li F, Ganguly M, Marky LA, Gold B, Egli M, Stone MP, Biochemistry. 2008 Jul 8;47(27):7147-57. Epub 2008 Jun 13. PMID: 18549246

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