| 1OW1: reference: A conserved structural motif reveals the essential transcriptional repression function of Spen proteins and their role in developmental signaling., Ariyoshi M, Schwabe JW, Genes Dev 2003 Aug 1;17(15):1909-20. PMID: 12897056 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).