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. Author manuscript; available in PMC: 2008 Apr 20.
Published in final edited form as: J Mol Biol. 2007 Feb 3;368(1):92–104. doi: 10.1016/j.jmb.2007.01.071

Figure 4.

Figure 4

Angular distributions of total and antiparallel cross-links. A, Illustrates the angle convention used. B, Cross-link angles measured from left and right class averages of all repeats. Distribution is nearly symmetric because left and right angles are complementary. The departure from symmetry occurs because of cases where the repeat containing the opposite end of the cross-link was not extracted. C, Cross-link angles measured from left and right class averages of antiparallel repeats. The distribution is lopsided due to twice as many filaments having right-side antiparallel cross-links. Preferred orientations overall were the ~60°/120° “struts”. Total cross-links also strongly preferred 0°/180° “monofilament” binding.