Cofilin promotes stimulus-induced lamellipodium formation by generating an abundant supply of actin monomers.
Cofilin promotes stimulus-induced lamellipodium formation by generating an abundant supply of actin monomers.
复制标题
DOI:
10.1083/jcb.200610005
复制
发表时间:
2007-05-07
期刊:
影响因子:
--
通讯作者:
Mizuno K
中科院分区:
文献类型:
--
作者:
Kiuchi T;Ohashi K;Kurita S;Mizuno K
Cofilin stimulates actin filament disassembly and accelerates actin filament turnover. Cofilin is also involved in stimulus-induced actin filament assembly during lamellipodium formation. However, it is not clear whether this occurs by replenishing the actin monomer pool, through filament disassembly, or by creating free barbed ends, through its severing activity. Using photoactivatable Dronpa-actin, we show that cofilin is involved in producing more than half of all cytoplasmic actin monomers and that the rate of actin monomer incorporation into the tip of the lamellipodium is dependent on the size of this actin monomer pool. Finally, in cofilin-depleted cells, stimulus-induced actin monomer incorporation at the cell periphery is attenuated, but the incorporation of microinjected actin monomers is not. We propose that cofilin contributes to stimulus-induced actin filament assembly and lamellipodium extension by supplying an abundant pool of cytoplasmic actin monomers.
登录
查看更多内容
影响因子:
3.3
作者:
MOON, A;DRUBIN, DG
通讯作者:
DRUBIN, DG
影响因子:
4.1
作者:
Moriyama, K;Yahara, L
通讯作者:
Yahara, L
影响因子:
64.8
作者:
Lappalainen, P;Drubin, DG
通讯作者:
Drubin, DG
影响因子:
9.2
作者:
Cramer, LP
通讯作者:
Cramer, LP
DOI:
10.1083/jcb.136.6.1307
发表时间:
1997-03-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Carlier MF;Laurent V;Santolini J;Melki R;Didry D;Xia GX;Hong Y;Chua NH;Pantaloni D
通讯作者:
Pantaloni D