Antithrombin (AT), as known as antithrombin III (AT III, AT 3), is a serpin (serine protease inhibitor) that inactivates some cogulation factors involved in the contact activation pathway, such as factor Xa and factor IIa.
Antithrombin could be used in heparin assays (both anti-IIa and anti-Xa potency assay), affinity columns and so on.
Physical and Chemical Properties
Appearance: white lyophilized powder
Purity: electrophoretic purity
Molecular weight: about 56 kDa
E1cm1%(280 nm): about 10
Specific activity: not less than 6 IU/mg