3LF2:
reference: The short chain oxidoreductase Q9HYA2 from Pseudomonas aeruginosa PAO1 contains an atypical catalytic center., Huether R, Mao Q, Duax WL, Umland TC, Protein Sci. 2010 Mar 25. PMID: 20340135

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