1R5V:
reference: Evidence that structural rearrangements and/or flexibility during TCR binding can contribute to T cell activation., Krogsgaard M, Prado N, Adams EJ, He XL, Chow DC, Wilson DB, Garcia KC, Davis MM, Mol Cell 2003 Dec;12(6):1367-78. PMID: 14690592

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