3U89:
reference: B-DNA structure is intrinsically polymorphic: even at the level of base pair positions., Maehigashi T, Hsiao C, Kruger Woods K, Moulaei T, Hud NV, Dean Williams L, Nucleic Acids Res. 2011 Dec 17. PMID: 22180536

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