4ASH:
reference: Structure of a Murine Norovirus NS6 Protease-Product Complex Revealed by Adventitious Crystallisation., Leen EN, Baeza G, Curry S, PLoS One. 2012;7(6):e38723. Epub 2012 Jun 7. PMID: 22685603

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