Download MendeleyActive-site mimetic inhibition of thrombin.
Mathews, I.I., Tulinsky, A.(1995) Acta Crystallogr D Biol Crystallogr 51: 550-559
- PubMed: 15299843
- DOI: https://doi.org/10.1107/S0907444994013132
- Primary Citation of Related Structures:
1FPC, 3HAT - PubMed Abstract:
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.
Organizational Affiliation:
Department of Chemistry, Michigan State University, East Lansing 48824, USA.
