| 2IOU: reference: Selective ligand recognition by a diversity-generating retroelement variable protein., Miller JL, Le Coq J, Hodes A, Barbalat R, Miller JF, Ghosh P, PLoS Biol. 2008 Jun 3;6(6):e131. PMID: 18532877 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).