Serpina1a
Domain
The reactive center loop (RCL) extends out from the body of the protein and directs binding to the target protease. The protease cleaves the serpin at the reactive site within the RCL, establishing a covalent linkage between the carboxyl group of the serpin reactive site and the serine hydroxyl of the protease. The resulting inactive serpin-protease complex is highly stable (By similarity). Variability within the reactive center loop (RCL) sequences of Serpina1-related genes may determine target protease specificity.
Function
Inhibitor of serine proteases. Its primary target is elastase, but it also has a moderate affinity for plasmin and thrombin.
Sequence Similarities
Belongs to the serpin family.
Cellular localization
- Secreted
Alternative names
Dom1, Spi1-1, Serpina1a, Alpha-1-antitrypsin 1-1, AAT, Alpha-1 protease inhibitor 1, Alpha-1-antiproteinase, Serine protease inhibitor 1-1, Serine protease inhibitor A1a, Serpin A1a