TABLE I.

Parameters for the SF model.

Parameter	Meaning	Value
Δx	Width of the energy barrier	3 nm [28]
f0	Normalizing force	2.2 pN
E0	Reference energy of catch bond	1.98−19 J
α	Bond catchiness	2.4 kBT
Nx	Number of myosin heads per filament	20 [17]
Nf	Number of myosin filament per bundle	10 [29,30]
l	Length of the control segment	1 µm [29,30]
T	Absolute temperature	300 K
ζ	Stall force	5 pN [31]
k	Actomyosin bond elasticity	600 pN/µm [32,33]
υ	Maximum contraction velocity of SF	1 µm/s [34]