Serum Globulin

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** A family of globular proteins found in blood that does not include albumin. These proteins are insoluble in water but solubility is increased in dilute salt solutions. Globulins are grouped into four categories (alpha 1, alpha 2, beta and gamma) based on differences in electrophoretic mobility.

**Synonyms:** - Globulin