Native Bovine Factor Ixa


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Native Bovine Factor Ixa

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Cat.No. : Fixa-278B
Description : Factor IXa is produced from its inactive precursor, factor IX, via proteolytic cleavage by factor XIa or the tissue factor/factor VIIa/phospholipid complex. The activation results from the cleavage of two peptide bonds in the factor IX molecule, releasing an activation glycopeptide with an apparent molecular weight of 10,000. The heavy chain of factor IXa (Mr=28,000) contains the serine protease catalytic domain, while the light chain (Mr=17,000) contains the membrane binding domain. Factor IXa functions as a serine protease involved in the activation of the zymogen, factor X, to form the enzyme, factor Xa. The factor IXa enzymatic activity is greatly enhanced by inclusion of its cofactor, factor VIIIa, in the presence of calcium ions on a phospholipid surface. Factor IXa is readily inhibited by antithrombin III, and this inhibition is greatly accelerated by the presence of heparin. Factor IXa is not inhibited by DFP.
Source : Plasma
Species : Bovine
Form : 50% glycerol/water (v/v)
Bio-activity : Factor IX clotting assay
Purity : >95% by SDS-PAGE. NOT tissue/cell culture grade. Not tested for endotoxin.
Characteristic : Extinction coefficient:14.0, Structure: 2 subunits, Mr=28,000 and 17,000 (5), NH2-terminal gla-domain, two EGF domains
Storage : -20°C

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