B chain

B chain

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.

Farlex Partner Medical Dictionary © Farlex 2012

B chain

(chān)

A polypeptide component of insulin containing 30 amino acyl residues; insulin is formed by the linkage of a B chain to an A chain.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012