| 1NB4: reference: Substrate complexes of hepatitis C virus RNA polymerase (HC-J4): structural evidence for nucleotide import and de-novo initiation., O'Farrell D, Trowbridge R, Rowlands D, Jager J, J Mol Biol 2003 Feb 28;326(4):1025-35. PMID: 12589751 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).