Immunoglobulin (Ig) molecules consist of two chains, one heavy chain (which can be alpha, delta, epsilon, gamma or mu) and one light chain (which can be kappa or lambda) each consisting of a variable and a constant region. An IgM molecule contains thus a mu heavy chain combined with either a kappa or a lambda light chains. It is found almost exclusively as a homopentamer in the serum. Membrane-bound IgM molecules are non-covalently associated with heterodimer of CD79A and CD79B.
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Immunoglobulin (Ig) molecules consist of two chains, one heavy chain (which can be alpha, delta, epsilon, gamma or mu) and one light chain (which can be kappa or lambda) each consisting of a variable and a constant region. An IgM molecule contains thus a mu heavy chain combined with either a kappa or a lambda light chains. It is found almost exclusively as a homopentamer in the serum. Membrane-bound IgM molecules are non-covalently associated with heterodimer of CD79A and CD79B.
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