2ANT:
reference: The 2.6 A structure of antithrombin indicates a conformational change at the heparin binding site., Skinner R, Abrahams JP, Whisstock JC, Lesk AM, Carrell RW, Wardell MR, J Mol Biol 1997 Feb 28;266(3):601-9. PMID: 9067613

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