Alpha-1 Antitrypsin or alpha1-antitrypsin (A1AT) is a protease inhibitor belonging to the serpin superfamily. It is generally known as serum trypsin inhibitor. Alpha 1-antitrypsin is also referred to as alpha-1 proteinase inhibitor (A1PI) because it inhibits a wide variety of proteases. It protects tissues from enzymes of inflammatory cells, especially neutrophil elastase, and has a reference range in blood of 1.5 - 3.5 gram/liter (in US the reference range is generally expressed as mg/dL or micromoles), but the concentration can rise manyfold upon acute inflammation. In its absence (such as in alpha 1-antitrypsin deficiency), neutrophil elastase is free to break down elastin, which contributes to the elasticity of the lungs, resulting in respiratory complications such as emphysema, or COPD (chronic obstructive pulmonary disease) in adults and cirrhosis in adults or children.

Like all serine protease inhibitors, A1AT has a characteristic secondary structure of beta sheets and alpha helices. Mutations in these areas can lead to non-functional proteins that can polymerise and accumulate in the liver (infantile hepatic cirrhosis). [Wiki].

Western blot: 0,5 - 1 µg/ml IHC (Paraffin): 0,5 - 1 µg/ml IF: 0,5 - 1 µg/ml Flow Cytometry: 0,5 - 1 µg/10e6 cells in 0,1 ml Titration of the Alpha 1 Antitrypsin antibody may be required due to differences in protocols and secondary/substrate sensitivity.

Type: Primary
Antigen: SERPINA1
Clonality: Monoclonal
Clone: AAT/1379
Conjugation: Unconjugated
Epitope:
Host: Mouse
Isotype: IgG1
Reactivity: Human