AACT antibody, ACT antibody, GIG25 antibody, A1AT antibody, PI antibody, alpha-1-PI antibody, A1A antibody, AAT antibody, PI1 antibody, PRO2275 antibody, alpha1AT antibody, Pi antibody, Spi1 antibody, MGC64429 antibody, serpina1d antibody, Aps antibody, SERPINA3-5 antibody, serpin family A member 3 antibody, alpha-1-antiproteinase F precursor antibody, serpin family A member 1 antibody, alpha-1-antitrypsin antibody, calumenin antibody, serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin), member 1 S homeolog antibody, serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin), member 1 antibody, serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin), member 5 antibody, SH2B adaptor protein 2 antibody, serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin), member 3 antibody, serpin peptidase inhibitor, clade A (alpha-1 antiproteinase, antitrypsin), member 1 L homeolog antibody, SERPINA3 antibody, LOC100008973 antibody, SERPINA1 antibody, LOC100328621 antibody, CALU antibody, Serpina1 antibody, serpina1.S antibody, serpina1 antibody, SPIA5 antibody, Sh2b2 antibody, Calu antibody, serpina1.L antibody
Background
The protein encoded by this gene is secreted and is a serine protease inhibitor whose targets include elastase, plasmin, thrombin, trypsin, chymotrypsin, and plasminogen activator. Defects in this gene can cause emphysema or liver disease. Several transcript variants encoding the same protein have been found for this gene.