4G36:
reference: Crystal Structure of Firefly Luciferase in a Second Catalytic Conformation Supports a Domain Alternation Mechanism., Sundlov JA, Fontaine DM, Southworth TL, Branchini BR, Gulick AM, Biochemistry. 2012 Aug 6. PMID: 22852753

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