2VLB:
reference: Active-site mobility revealed by the crystal structure of arylmalonate decarboxylase from Bordetella bronchiseptica., Kuettner EB, Keim A, Kircher M, Rosmus S, Strater N, J Mol Biol. 2008 Mar 21;377(2):386-94. Epub 2008 Jan 5. PMID: 18258259

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