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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: J Struct Biol. 2013 Feb 18;182(2):155–163. doi: 10.1016/j.jsb.2013.02.007

Figure 6.

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.