| 4L72: reference: Structure of MERS-CoV spike receptor-binding domain complexed with human receptor DPP4., Wang N, Shi X, Jiang L, Zhang S, Wang D, Tong P, Guo D, Fu L, Cui Y, Liu X, Arledge KC, Chen YH, Zhang L, Wang X, Cell Res. 2013 Aug;23(8):986-93. doi: 10.1038/cr.2013.92. Epub 2013 Jul 9. PMID: 23835475 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).