|B chain||medical dictionary|
A polypeptide component of insulin containing 30 amino acyl residues, beginning with a phenylalanyl residue (NH2-terminus); insulin is formed by the linkage of a B chain to an A chain by two disulfide bonds; the amino-acid composition of the B chain is a function of species.
Synonyms: phenylalanyl chain.
(05 Mar 2000)
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