| 1VRR: reference: Implications for Switching Restriction Enzyme Specificities from the Structure of BstYI Bound to a BglII DNA Sequence., Townson SA, Samuelson JC, Xu SY, Aggarwal AK, Structure (Camb) 2005 May;13(5):791-801. PMID: 15893669 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).