alpha 2 acute phase globulins meaning

[Medicine]
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.