| 2J1Q: reference: The crystal structure of Trypanosoma cruzi arginine kinase., Fernandez P, Haouz A, Pereira CA, Aguilar C, Alzari PM, Proteins. 2007 Jul 10;. PMID: 17623863 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).