| 3SFU: reference: Crystal structures of murine norovirus-1 RNA-dependent RNA polymerase in complex with 2-thiouridine or ribavirin., Alam I, Lee JH, Cho KJ, Han KR, Yang JM, Chung MS, Kim KH, Virology. 2012 May 10;426(2):143-51. Epub 2012 Feb 16. PMID: 22341781 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).