3IU4:
reference: Crystal structure of an anti-ganglioside antibody, and modelling of the functional mimicry of its NeuGc-GM3 antigen by an anti-idiotypic antibody., Talavera A, Eriksson A, Okvist M, Lopez-Requena A, Fernandez-Marrero Y, Perez R, Moreno E, Krengel U, Mol Immunol. 2009 Oct;46(16):3466-75. Epub 2009 Sep 12. PMID: 19748674

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