Fig. 3.

Lateral contacts at the MT seam for MTs with different stabilities. The panels show comparisons of the C1 and the symmetrized reconstructions of different MT states. (A, B, and D–H) Cα-atoms displacements between atomic models of one helical turn of tubulin dimers for the C1 and the symmetrized reconstructions of different MT states, with deviations colored from blue to red. The histograms of Cα-atoms displacements are also shown above the atomic models. (C) Superimposition of the C1 and the symmetrized reconstructions of 13-PF GDP MT, showing the seam opening in the C1 reconstruction (red arrows). Both reconstructions have been low-pass–filtered to 7-Å resolution for easier comparison.