5TJR:
reference: Structural Analysis Provides Mechanistic Insight into Nicotine Oxidoreductase from Pseudomonas putida., Tararina MA, Janda KD, Allen KN, Biochemistry. 2016 Dec 6;55(48):6595-6598. Epub 2016 Nov 18. PMID: 27933790

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