Purity: > 90% by SDS - PAGE Format: Liquid in 20mM Tris pH 7.5, 10% glycerol, 1mM DTT, 2mM EDTA . Alpha 1 proteinase inhibitor (Antitrypsin) has a characteristic secondary structure of beta sheets and alpha helices. That is a serum glycoprotein synthesized in the liver. It acts as an elastase inhibitor, primarily inhibiting neutrophil elastase, chymotrypsin, collagenase, leucocytic proteases, plasmin, and thrombin, which may be released during inflammatory reactions in the lung. Also Increase in Antitrypsin occurs as an acute phase response to tissue necrosis and inflammation. Serum level of Antitrypsin is elevated in rheumatoid arthritis, bacterial infections, vasculitis, and carcinomatosis. Recombinant Antitrypsin protein was expressed in E.coli and purified by using conventional chromatography techniques.