1AXS:
reference: The interplay between binding energy and catalysis in the evolution of a catalytic antibody., Ulrich HD, Mundorff E, Santarsiero BD, Driggers EM, Stevens RC, Schultz PG, Nature 1997 Sep 18;389(6648):271-5. PMID: 9305839

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