<unk>  is one of the two types of serum proteins, the other being albumin. This generic term encompasses a heterogeneous series of families of proteins, with larger molecules and less soluble in pure water than albumin, which migrate less than albumin during serum electrophoresis.
It is sometimes used synonymously with Globular protein. However, albumin is also a globular protein, but not a<unk> . All other serum globular proteins are<unk> s.
Protein electrophoresis is used to categorize<unk> s into the following four categories:
Alpha 1<unk> s
Alpha 2<unk> s
Beta<unk> s
Gamma<unk> s (one group of gamma<unk> s are immunoglobulins, that function as antibodies)
Globulin
Beta globulins
Gamma globulin
Albumin
Hemoglobin
Crystallin
Fibrous protein
Lipoprotein