Arp2/3 interacts with barbed ends,
independently of filament length
(D.Pantaloni
et al.
2000)
0
1
2
0
200
400
600
Polymerised actin, µM
Time, s
20 pM
Gelsolin
0
1
2 µm
Seeds length
( µm)
Spectrin-actin
control
