3UQS:
reference: Structure-Based Inhibition of Norovirus RNA-Dependent RNA Polymerases., Mastrangelo E, Pezzullo M, Tarantino D, Petazzi R, Germani F, Kramer D, Robel I, Rohayem J, Bolognesi M, Milani M, J Mol Biol. 2012 Mar 21. PMID: 22446684

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