| 4O1S: reference: Structure-based engineering and comparison of novel split inteins for protein ligation., Aranko AS, Oeemig JS, Zhou D, Kajander T, Wlodawer A, Iwai H, Mol Biosyst. 2014 Feb 26. PMID: 24574026 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).