| 1VPW: reference: The structure of PurR mutant L54M shows an alternative route to DNA kinking., Arvidson DN, Lu F, Faber C, Zalkin H, Brennan RG, Nat Struct Biol 1998 Jun;5(6):436-41. PMID: 9628480 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).