3G8E:
reference: Crystal structure of Rattus norvegicus Visfatin/PBEF/Nampt in complex with an FK866-based inhibitor., Kang GB, Bae MH, Kim MK, Im I, Kim YC, Eom SH, Mol Cells. 2009 Jun;27(6):667-71. Epub 2009 Jun 12. PMID: 19533035

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).