Species : |
Bovine |
Source : |
Plasma |
Tag : |
Non |
Description : |
Alpha-thrombin is a highly specific serine protease generated by proteolytic activation of the zymogen prothrombin. During coagulation, thrombin cleaves fibrinogen to form fibrin, leading to the ultimate step in coagulation, the formation of a fibrin clot. Thrombin is also responsible for feedback activation of the procofactors factor V and factor VIII. Thrombin has also been reported to activate factor XIII and platelets, and also functions as a vasoconstrictor protein. The procoagulant activity of thrombin is arrested in two ways: 1) inhibition by either heparin cofactor II or the antithrombin III/heparin complex; or 2) complex formation with thrombomodulin. Formation of the thrombin/thrombomodulin complex results in the inability of thrombin to cleave fibrinogen and activate factors V and VIII, but increases the efficiency of thrombin for activation of the anticoagulant, protein C. |
Form : |
50% glycerol/water (v/v) |
Bio-activity : |
Fibrinogen clotting or chromogenic assay |
Molecular Mass : |
36700 |
Purity : |
>95% by SDS-PAGE. NOT tissue/cell culture grade. Not tested for endotoxin. |
Characteristic : |
Extinction coefficient:19.5, Percent carbohydrate: approximately 5%, Structure: two subunits, approximately Mr=6,000 and 31,000 |
Storage : |
-20°C |