3NT7:
reference: Vaccinia virus D4 mutants defective in processive DNA synthesis retain binding to A20 and DNA., Druck Shudofsky AM, Silverman JE, Chattopadhyay D, Ricciardi RP, J Virol. 2010 Dec;84(23):12325-35. Epub 2010 Sep 22. PMID: 20861259

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