1BRL:
reference: Three-dimensional structure of bacterial luciferase from Vibrio harveyi at 2.4 A resolution., Fisher AJ, Raushel FM, Baldwin TO, Rayment I, Biochemistry 1995 May 23;34(20):6581-6. PMID: 7756289

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