1DNK:
reference: X-ray structure of the DNase I-d(GGTATACC)2 complex at 2.3 A resolution., Weston SA, Lahm A, Suck D, J Mol Biol 1992 Aug 20;226(4):1237-56. PMID: 1518054

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