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. 2019 Mar 4;218(3):1027–1038. doi: 10.1083/jcb.201806148

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© 2019 Heymann et al.

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Figure 2. — Selected class averages, illustrating the different interactions between molecules of RS1 and models illustrating the configurations. (A–C) The most common interaction (type I) between the spikes of molecules with alternating offset (58%; A), ends (24%; B), and stepped offset (1.4%; C). (D) A fourfold symmetric spoke-wheel arrangement with 90° interactions between the spikes (type II: 1.5%). (E–H) Interactions where spikes of one molecule are bound to one side of the top of the ring of another molecule (type III, 8%). (I–L) Interactions where spikes of one molecule are bound close to the center of the top of the ring of another molecule with various angles (type IV, 7%). (The image in L was threefold symmetrized). Several of these class averages are included in the larger and more diverse set shown in Fig. S4. Scale bar, 150 Å.