Figure 1.

Structure of IgG and Fc glycans. (A) Shown above is the crystal structure of IgG. IgG consists of two heavy chain (blue), two light chain (gray) and oligosaccharide (red and white balls). The functional parts (Fc, Fab and hinge) of IgG formed by these heavy and light chains are shown with vertical lines suitable for their sizes. This figure is generated form crystal structure in PDB data bank file 1IGT using Viewer Lite software. (B) The fully (top) and partially (bottom) processed IgG Fc glycan structures and the glycan monomers forming this structure are shown (top-right corner).