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B chain

 

Definition:

  1. the longer polypeptide component of insulin containing 30 amino acyl residues, beginning with a phenylalanyl residue (NH2-terminus); insulin consists of a B chain linked to an A chain by two disulfide bonds; the amino acid composition of the B chain is a function of species;
  2. the light chain of an immunoglobulin.
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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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