3RE4:
reference: Interaction of rio1 kinase with toyocamycin reveals a conformational switch that controls oligomeric state and catalytic activity., Kiburu IN, Laronde-Leblanc N, PLoS One. 2012;7(5):e37371. Epub 2012 May 22. PMID: 22629386

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).