alpha-Macroglobulins

**Definition:** 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.

**Tree numbers:** - D12.776.124.050.080 - D12.776.124.790.106.100 - D12.776.124.790.720.100 - D12.776.377.715.085.100 - D12.776.377.715.647.100

**Synonyms:** - 45S RNP - alpha-Macrofetoproteins