3E2H:
reference: Distinct CDR3 conformations in TCRs determine the level of cross-reactivity for diverse antigens, but not the docking orientation., Jones LL, Colf LA, Stone JD, Garcia KC, Kranz DM, J Immunol. 2008 Nov 1;181(9):6255-64. PMID: 18941216

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