| 3IQN: reference: Free state conformational sampling of the SAM-I riboswitch aptamer domain., Stoddard CD, Montange RK, Hennelly SP, Rambo RP, Sanbonmatsu KY, Batey RT, Structure. 2010 Jul 14;18(7):787-97. PMID: 20637415 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).