See Also: immunoglobulins, j-chain(medicine)
immunoglobulins, mu-chain(medicine)
immunoglobulins, gamma-chain(medicine)
immunoglobulins, heavy-chain(medicine)
immunoglobulins, kappa-chain(medicine)
immunoglobulins, epsilon-chain(medicine)
immunoglobulins, lambda-chain(medicine)
immunoglobulins, light-chain(medicine)
immunoglobulins, delta-chain(medicine)
immunoglobulins, alpha-chain(medicine)

immunoglobulins, j-chain (medicine)


immunoglobulins, j-chain


The immunoglobulin fragments found in the light chain fractions of secretory IgA and polymeric IgM in a ratio of one j chain per one IgA dimer or one IgM pentamer. It is a polypeptide with a molecular weight of about 17 kD and probably serves either to bind the components of the globulins together or to transfer the globulins across membranes.