globulin

n. type of protein found in plant and animal tissues

Globulin 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 globulin. All other serum globular proteins are globulins.Protein electrophoresis is used to categorize globulins into the following four categories: Alpha 1 globulinsAlpha 2 globulinsBeta globulinsGamma globulins (one group of gamma globulins are immunoglobulins, that function as antibodies)
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Globulin /glob·u·lin/ any of a class of proteins insoluble in water, but soluble in saline solutions, or water-soluble proteins ; their other [more]Globulin - Community and Resources

Noun
1. a family of proteins found in blood and milk and muscle and in plant seed
(hypernym) simple protein
(hyponym) alpha globulin

n. globulin, type of protein found in plant and animal tissues