Table 2.

Simulation Inputs

Symbol	Definition	Value	References
δ	Actin monomer size	2.7 nm	[22]
r0	Bead radius	3 μm	[13]
Dm	Actin Monomer diffusion coefficient	70 μm2s−1	[20]
Dc	Capping protein diffusion coefficient	61 μm2s−1	This article
Da	Arp2/3 complex diffusion coefficient	40 μm2s−1	This article
kon	Monomer on-rate constant	11.6 μM−1s−1	[23]
kcap	Capping rate	8 μM−1s−1	[21]
ksp	Nucleation rate	Varies	This article
kbr	Branching rate	Varies	This article
kd	Decay rate	1.8 ×103s−1	[21]
[G0]	Initial bulk monomer concentration	1.4 – 3.0μM	[13]
Gc	Barbed-end critical concentration	0.07 μM	[21]
[CP0]	Initial bulk capping protein concentration	15 – 128 nM	[13]
[Arp0]	Initial bulk Arp2/3 complex concentration	48 – 96 nM	[13]
[Arpc]	Crossover Arp2/3 complex concentration	1 – 10 nM	This article
V0	Solution volume per bead	3.3 × 105 μm3	Calculated from [13]