3OOD:
reference: The organophosphate-degrading enzyme from Agrobacterium radiobacter displays mechanistic flexibility for catalysis., Ely F, Hadler KS, Gahan LR, Guddat LW, Ollis DL, Schenk G, Biochem J. 2010 Nov 25;432(3):565-73. PMID: 20868365

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