1RU9:
reference: Probing the antibody-catalyzed water-oxidation pathway at atomic resolution., Zhu X, Wentworth P Jr, Wentworth AD, Eschenmoser A, Lerner RA, Wilson IA, Proc Natl Acad Sci U S A. 2004 Feb 24;101(8):2247-52. PMID: 14982995

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