alpha 1-Antichymotrypsin

**Definition:** Glycoprotein found in alpha(1)-globulin region in human serum. It inhibits chymotrypsin-like proteinases in vivo and has cytotoxic killer-cell activity in vitro. The protein also has a role as an acute-phase protein and is active in the control of immunologic and inflammatory processes, and as a tumor marker. It is a member of the serpin superfamily.

**Tree numbers:** - D09.400.430.563 - D12.644.861.030 - D12.776.124.050.050 - D12.776.124.790.106.050 - D12.776.377.715.085.050 - D12.776.395.045 - D12.776.872.030

**Synonyms:** - Serpin A3 - alpha(1)-Antichymotrypsin