Bovine thrombin complexed with an uncleavable analog of residues 7-19 of fibrinogen Aa: Geometry of the catalytic triad and interactions of the PI’, P2’ and P3’ substrate residues - Martin, P D; Malkowski, M G; DiMaio, J; Konishi, Y; Ni, F; Edwards, B.F P (Biochemistry, 1996)