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Figure 2
Asymmetric architecture of the inner collar. (a) Extracted cryo-EM density of a set of inner FUs with the respective homology models fitted. (b) The cryo-EM structure depicted in cylindrical sections. FU-gs, and FU-d*s are shown in cyan and yellow, respectively. The wall region is shown in gray. The arrow indicates the area of the symmetry break. The dashed line indicates a set of inner FUs, i.e. two FU-gs and two FU-d*s

IUCrJ
Volume 6| Part 3| May 2019| Pages 426-437
ISSN: 2052-2525
https://doi.org/10.1107/S205225251900321X