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The structure of thrombin: a janus-headed proteinase
1The Proteinase Research Group, Max-Planck-Institute of Biochemistry, Martinsried, Germany. bode@biochem.mpg.de
Seminars in Thrombosis and Hemostasis
|May 5, 2006
Summary
Vascular injury rapidly activates alpha-thrombin, a key enzyme in blood coagulation. Understanding thrombin
Area of Science:
- Biochemistry
- Molecular Biology
- Hematology
Background:
- Vascular injury initiates a cascade leading to rapid alpha-thrombin generation.
- Alpha-thrombin is a central enzyme in the coagulation cascade with diverse roles.
- Thrombin's procoagulant, anticoagulant, and antifibrinolytic properties contribute to physiological functions and thrombotic disorders.
Purpose of the Study:
- To explore the multifaceted interactions of alpha-thrombin with various molecules.
- To elucidate the structural basis for thrombin's diverse functions and specificities.
- To highlight thrombin as a potential target for antithrombotic therapies.
Main Methods:
- Analysis of numerous crystal structures of alpha-thrombin.
- Examination of thrombin in complex with substrates, inhibitors, cofactors, and carbohydrates.
- Investigation of thrombin's interactions with protein substrates, receptors, and modulators.
Main Results:
- Crystal structures reveal extended recognition sites on the thrombin surface.
- The thrombin surface can be functionally subdivided into distinct regions.
- These regions enable specific interactions with a wide array of molecules.
Conclusions:
- Thrombin's structure supports its versatile and multifunctional specificity.
- Understanding thrombin's interaction sites is crucial for developing targeted antithrombotic agents.
- The structural insights explain thrombin's diverse physiological and pathological roles.
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