alpha-Macroglobulins

45S RNP; Acute-Phase alpha 1-Protein; Slow alpha 2-Globulin; alpha 1-Acute Phase Globulin; alpha 1-Acute Phase Protein; alpha 1-Macroglobulin; alpha 2-Acute Phase Globulin; alpha 2-Glucoprotein; alpha 2-Macroglobulin; alpha-Macrofetoprotein
Glycoproteins with a molecular weight of approximately 620,000 to 680,000. Precipitation by electrophoresis is in the alpha region. They include alpha 1-macroglobulins and alpha 2-macroglobulins. These proteins exhibit trypsin-, chymotrypsin-, thrombin-, and plasmin-binding activity and function as hormonal transporters.