Page 433 - Veterinary Immunology, 10th Edition

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FIG. 15.1 The overall structure of an immunoglobulin molecule.
When expressed on a B cell surface, this molecule acts as an
antigen receptor (BCR). When released by the B cell and free in the
circulation, it acts as an antibody. Note that unlike a TCR, it has two
antigen-binding sites.

FIG. 15.2 The effect of treating an immunoglobulin molecule with
the proteolytic enzyme papain. The names of these fragments
denote the nomenclature of different regions of an immunoglobulin
molecule. Fab, Fragment-antibody binding; Fc, Fragment
crystallizable.

Light Chains

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