2LNC:
reference: Structural and dynamics characterization of norovirus protease., Takahashi D, Hiromasa Y, Kim Y, Anbanandam A, Yao X, Chang KO, Prakash O, Protein Sci. 2013 Jan 15. doi: 10.1002/pro.2215. PMID: 23319456

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