1HM7:
reference: Pentalenene synthase. Analysis of active site residues by site-directed mutagenesis., Seemann M, Zhai G, de Kraker JW, Paschall CM, Christianson DW, Cane DE, J Am Chem Soc 2002 Jul 3;124(26):7681-9. PMID: 12083921

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