423D:
reference: Structural code for DNA recognition revealed in crystal structures of papillomavirus E2-DNA targets., Rozenberg H, Rabinovich D, Frolow F, Hegde RS, Shakked Z, Proc Natl Acad Sci U S A 1998 Dec 22;95(26):15194-9. PMID: 9860945

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