4TGL:
reference: Catalysis at the interface: the anatomy of a conformational change in a triglyceride lipase., Derewenda U, Brzozowski AM, Lawson DM, Derewenda ZS, Biochemistry 1992 Feb 11;31(5):1532-41. PMID: 1737010

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