1OTJ:
reference: Substrate-Induced Conformational Changes in Escherichia coli Taurine/alpha-Ketoglutarate Dioxygenase and Insight into the Oligomeric Structure., O'Brien JR, Schuller DJ, Yang VS, Dillard BD, Lanzilotta WN, Biochemistry 2003 May 20;42(19):5547-54. PMID: 12741810

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