| 2GMK: reference: Structural basis for catalysis by onconase., Lee JE, Bae E, Bingman CA, Phillips GN Jr, Raines RT, J Mol Biol. 2008 Jan 4;375(1):165-77. Epub 2007 Oct 4. PMID: 18001769 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).