1GHF:
reference: Crystal structure of an anti-anti-idiotype shows it to be self-complementary., Ban N, Day J, Wang X, Ferrone S, McPherson A, J Mol Biol 1996 Feb 2;255(4):617-27. PMID: 8568901

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