Table 2.

Parameters of the Cytoskeleton

hs (nm)	νs (pN s μm−1)	pf (nm)	pu (nm)	Lf (nm)
2	0.0625	11.12	0.8	6.39
Lu (nm)	ΔΔx∗ (nm)	F1/2 (pN)	μs (pN μm−1)
39	12.6	12	5.7

h_s, cytoskeleton thickness; ν_s, cytoskeleton viscosity (64); p_f, persistence length of folded domains in Sp; p_u, persistence length of unfolded domains (32); L_f, contour length of folded domains (32); L_u, contour length of unfolded domains (32); ΔΔx^∗, the difference between the activation length of the unfolding process and that of the refolding process (32); F_1/2, the force corresponding to the state when half of the domains are unfolded (32); μ_s, initial shear modulus of the cytoskeleton (65). A spectrin consists of 19 domains in our model.