1ZBL:
reference: Crystal Structures of RNase H Bound to an RNA/DNA Hybrid: Substrate Specificity and Metal-Dependent Catalysis., Nowotny M, Gaidamakov SA, Crouch RJ, Yang W, Cell 2005 Jul 1;121(7):1005-16. PMID: 15989951

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