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. 2011 Dec 13;31(3):552–562. doi: 10.1038/emboj.2011.460

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Copyright © 2012, European Molecular Biology Organization

This is an open-access article distributed under the terms of the Creative Commons Attribution Noncommercial No Derivative Works 3.0 Unported License, which permits distribution and reproduction in any medium, provided the original author and source are credited. This license does not permit commercial exploitation or the creation of derivative works without specific permission.

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Link between the A- and B-tubules in the basal body triplet. (A) Two views showing a large Y-shaped structure lying horizontal between the A- and B-tubules at the luminal side of the basal body. A stack of these structures forms a longitudinal filament assembly. The model of MT PFs is in blue. A dashed-line box shows a single 8-nm longitudinal repeat unit. The areas that contact the A- and B-tubules are highlighted in red. (B) The Y-shaped structure viewed from the luminal side of the basal body. The model of MT PFs is in blue. Two neighbouring armBs join and form a bifurcated structure as indicated with ^*. (C) A second A- and B-tubule linker connecting PFs A13 and B10 as indicated with an arrow. The 4-nm periodicity is highlighted with red dots.