1Y0L:
reference: Structural origins of efficient proton abstraction from carbon by a catalytic antibody., Debler EW, Ito S, Seebeck FP, Heine A, Hilvert D, Wilson IA, Proc Natl Acad Sci U S A 2005 Apr 5;102(14):4984-9. Epub 2005 Mar 23. PMID: 15788533

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