2BJF:
reference: Conjugated bile acid hydrolase is a tetrameric N-terminal thiol hydrolase with specific recognition of its cholyl but not of its tauryl product., Rossocha M, Schultz-Heienbrok R, von Moeller H, Coleman JP, Saenger W, Biochemistry. 2005 Apr 19;44(15):5739-48. PMID: 15823032

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