Table 2. Parameters for diffusion and reactions.

Names	Parameters	References
Diffusion	$D_{actin,arp2/3,CP}=20\mu M^2/s$	Hu and Papoian, 2010
Actin	$k_{on}^{BE}=11.6-34.8{(\mu M\cdot s)}^{-1}$	32 and this work
	$k_{on}^{PE}=1.3{(\mu M\cdot s)}^{-1}$
	$k_{off}^{BE}=1.4s^{-1}$
	$k_{off}^{PE}=0.8-2.4s^{-1}$
Destruction	$k_{destruction}=1.0-1.9s^{-1}$	This work
Nucleation	$k_{nu}=0.005s^{-1}$	Ni and Papoian, 2019
Formin dissociation	$k_{off}^{formin}=0.01s^{-1}$	Fritzsche et al., 2016
Alpha-actinin	$k_{on}^{\alpha }=0.7{(\mu M\cdot s)}^{-1}$	Wachsstock et al., 1993
	$k_{on}^{\alpha }=0.3s^{-1}$
NMII head binding	$k_{on}^M=0.2s^{-1}$	Kovács et al., 2003
	$k_{on}^M=1.7s^{-1}$	Popov et al., 2016