3ZVD:
reference: 3C protease of enterovirus 68: Structure-based design of Michael acceptor inhibitors and their broad-spectrum antiviral effects against picornaviruses., Tan J, George S, Kusov Y, Perbandt M, Anemuller S, Mesters JR, Norder H, Coutard B, Lacroix C, Leyssen P, Neyts J, Hilgenfeld R, J Virol. 2013 Feb 6. PMID: 23388726

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