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. 2010 Aug 18;5(8):e12043. doi: 10.1371/journal.pone.0012043

Figure 1. Physical and mathematical model of a FA.

Figure 1

The FA is the grey-colored parallelogram. Binders are shown as double ellipses, either free or bound in complexes. The bound complexes have been depicted to be larger, of length Inline graphic in the Inline graphic-direction and their elastic response is represented by the springs. The elastic elements have length Inline graphic along the Inline graphic-direction. (Note that Inline graphic is an arbitrary length and has no effect on the potential; see the section titled “Driving force due to elasticity”.) The dotted arrows are actin stress fibers, which transfer force to the attached complexes. The bundle of actin stress fibers transmits total force Inline graphic. Also shown are the proximal and distal ends, Inline graphic, the centroid Inline graphic, length Inline graphic and domain boundaries Inline graphic.