alpha Immunoglobulin Definition
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Alpha Immunoglobulin: Heavy chains found in the Fab and Fc fragments of IMMUNOGLOBULIN A and having a molecular weight of approximately 58 kD. They contain about 470 amino acid residues arranged in four domains and an oligosaccharide component bound covalently to the Fc fragment.
Synonym: alpha chain immunoglobulins, alpha immunoglobulins.