catalog number :
MBS634686
products full name :
Factor Xa, BEGR (Biotin-EGR), Human
products short name :
Factor Xa, BEGR
purity :
Highly Purified. >95% (SDS-PAGE)
form :
Supplied as a liquid 20mM Hepes, pH 7.4, 150mM sodium chloride.
storage stability :
May be stored at 4 degree C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degree C. Aliquots are stable for at least 6 months at -20 degree C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
other info1 :
Specific Activity: ~1000u/mg. Extinction Coefficient: E1%1cm, 280nm= 11.6 (6). Mode of Action: Enzyme component of the prothrombinase complex. Structure: Two subunits, Mr=16,200 and 29,000 (6), NH2-terminal gla domain, two EGF domains. Percent Carbohydrate: 3.0% (8). Post-translational Modifications: Eleven gla residues, one beta-hydroxyaspartate
other info2 :
Localization: Plasma
products categories :
Molecular Biology; MB-Coagulation Factors
products description :
Activation of the zymogen, factor X, by either the intrinsic or extrinsic factor Xase complexes produces the active serine protease factor Xa (1,2). The activation of factor X requires proteolytic cleavage of the heavy chain, resulting in the release of an activation glycopeptide. The heavy chain region in factor Xa contains the serine protease catalytic domain, while the light chain, as in the zymogen, contains the membrane binding domain. Factor Xa participates in the prothrombinase complex, which catalyzes the rapid conversion of prothrombin to thrombin. Protothrombinase is an enzyme complex composed of factor Xa (enzyme) and factor Va (cofactor) assembled on a cellular suface in the presence of calcium ions. Although factor Xa can independently catalyze the activation o prothrombin, the rate at which this reaction occurs is increased nearly 300,000-fold with complete assembly of the prothrombinase complex. The clotting activity of factor Xa in vivo is terminated by wither inactivation of the cofactor, factor Va, or by direct inhibition of factor Xa by inhibitors, such as ATIII, after disassembly of the prothrombinase complex.