| 1V13: reference: Structure-based analysis of the metal-dependent mechanism of H-N-H endonucleases., Mate MJ, Kleanthous C, J Biol Chem. 2004 Aug 13;279(33):34763-9. Epub 2004 Jun 8. PMID: 15190054 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).