Figure 6.
Classifications of IgM in Maskiton. (a) An average of the full dataset showing the overall structure of the IgM with an approximate six-fold symmetry broken by a missing gap. (b) Masking only a single antibody arm shows the back-and-forth rotation of the Fab, highlighted by the red arrow. (c) Masking on the missing wedge indicates that this dataset does not contain a small sub-population of IgMs with a sixth antibody. Closer examination of the spacing of this wedge shows that it is ~10% smaller than the spacing occupied by the other antibody subunits.