3P9U:
reference: Crystal structure of Bacteroides thetaiotaomicron TetX2: a tetracycline degrading monooxygenase at 2.8 A resolution., Walkiewicz K, Davlieva M, Wu G, Shamoo Y, Proteins. 2011 Jul;79(7):2335-40. doi: 10.1002/prot.23052. Epub 2011 May 16. PMID: 21590745

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