IgG three-dimensional structure

Structure of immunoglobulin (Ig)G. Heavy chains are shown in blue. Light chains are shown in red. Brackets indicate the antigen-binding Fab portions and the Fc effector portion of the molecule.

Adapted from: Collin M, Shannon O, Björck L. IgG glycan hydrolysis by a bacterial enzyme as a therapy against autoimmune conditions. Proc Natl Acad Sci U S A 2008; 105:4265. Copyright (2008) National Academy of Sciences, U.S.A.

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