3K74:
reference: Constraining enzyme conformational change by an antibody leads to hyperbolic inhibition., Oyen D, Srinivasan V, Steyaert J, Barlow JN, J Mol Biol. 2011 Mar 18;407(1):138-48. Epub 2011 Jan 14. PMID: 21238460

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