6BNA:
reference: Binding of an antitumor drug to DNA, Netropsin and C-G-C-G-A-A-T-T-BrC-G-C-G., Kopka ML, Yoon C, Goodsell D, Pjura P, Dickerson RE, J Mol Biol 1985 Jun 25;183(4):553-63. PMID: 2991536

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