5Z3I:
reference: Structural basis for neutralization of cytotoxic abrin by monoclonal antibody D6F10., Bansia H, Bagaria S, Karande AA, Ramakumar S, FEBS J. 2018 Dec 6. doi: 10.1111/febs.14716. PMID: 30521151

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