https://www.ncbi.nlm.nih.gov/Structure/pdb/1HAH
1HAH: THE ISOMORPHOUS STRUCTURES OF PRETHROMBIN2, HIRUGEN-AND PPACK-THROMBIN: CHANGES ACCOMPANYING...
ALPHA-THROMBIN (LARGE SUBUNIT)ALPHA-THROMBIN (SMALL SUBUNIT)HIRUGEN2-acetamido-2-deoxy-beta-D-glucopyranose