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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Curr Opin Cell Biol. 2013 Nov 12;0:60–68. doi: 10.1016/j.ceb.2013.10.001

Figure 2.

Figure 2

Boundary conditions on one-dimensional cytoskeletal polymers. Top: imposed boundary conditions can impart compressional forces, hold the filament's end stationary or allow it to glide, and can stabilize or destabilize growth through specific biochemical activities. Bottom: Internal constraints arise from different nucleotide states of the polymer's subunits and can influence the binding and activity of regulatory proteins.