Active-site mimetic inhibition of thrombin.Mathews, I.I., Tulinsky, A.
(1995) Acta Crystallogr.,Sect.D 51: 550-559
- PubMed: 15299843
- DOI: 10.1107/S0907444994013132
- Primary Citation of Related Structures:  3HAT
- PubMed Abstract:
- The Structure of a Designed Peptidomimetic Inhibitor Complex of Alpha-Thrombin
Wu, T.-P.,Yee, V.,Tulinsky, A.,Chrusciel, R.A.,Nakanishi, H.,Shen, R.,Priebe, C.,Kahn, M.
(1993) Protein Eng. 6: 471
- Interactions of a Fluorescent Active-Site-Directed Inhibitor of Thrombin: Dansylarginine N-(3-Ethyl-1,5-Pentanediyl)Amide
Nesheim, M.E.,Prendergast, F.G.,Mann, K.G.
(1979) Biochemistry 18: 996
- Active Site and Exosite Binding of Alpha-Thrombin
Tulinsky, A.,Qiu, X.
(1993) Blood Coagulation Fibrinolysis 4: 305
The structures of two mimetic inhibitor complexes of human alpha-thrombin have been determined by X-ray crystallography. One mimics a beta-turn with a bicyclic ring system; the other mimics two different active-site binding modes. The beta-turn mimet ...
The structures of two mimetic inhibitor complexes of human alpha-thrombin have been determined by X-ray crystallography. One mimics a beta-turn with a bicyclic ring system; the other mimics two different active-site binding modes. The beta-turn mimetic is used to approximate a turn found in the conformation of fibrinopeptide A, which is catalytically released by thrombin in the activation of fibrinogen to fibrin. The binding of the second mimetic is a hybrid between normal substrate and the abnormal binding of the potent natural leech inhibitor hirudin. The binding of the beta-turn mimetic is tenuous, because it is like a substrate, while that of the substrate-hirudin hybrid is that of a tenacious inhibitor (which it is). Structurally retrospect modifications for rational design and improvement of both mimetic inhibitors are proposed.
Department of Chemistry, Michigan State University, East Lansing 48824, USA.