1ENN:
reference: Solvent organization in an oligonucleotide crystal. The structure of d(GCGAATTCG)2 at atomic resolution., Soler-Lopez M, Malinina L, Subirana JA, J Biol Chem 2000 Jul 28;275(30):23034-44. PMID: 10749874

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).