Turnover versus treadmilling in actin network assembly and remodeling
Turnover versus treadmilling in actin network assembly and remodeling
复制标题
肌动蛋白网络组装和重塑中的周转与跑步
DOI:
10.1002/cm.21564
复制
发表时间:
2019
期刊:
影响因子:
2.9
通讯作者:
Papoian, Garegin A.
中科院分区:
文献类型:
--
作者:
Ni, Qin;Papoian, Garegin A.
Actin networks are highly dynamic cytoskeletal structures that continuously undergo structural remodeling. One prominent way to probe these processes is via Fluorescence Recovery After Photobleaching (FRAP), which can be used to estimate the rate of turnover for filamentous actin monomers. It is thought that head‐to‐tail treadmilling and de novo filament nucleation constitute two primary mechanisms underlying turnover kinetics. More generally, these self‐assembly activities are responsible for many important cellular functions such as force generation, cellular shape dynamics, and cellular motility. In what relative proportions filament treadmilling and de novo filament nucleation contribute to actin network turnover is still not fully understood. We used an advanced stochastic reaction–diffusion model in three dimensions, MEDYAN, to study turnover dynamics of actin networks containing Arp2/3, formin and capping protein at experimentally meaningful length‐ and time‐scales. Our results reveal that, most commonly, treadmilling of older filaments is the main contributor to actin network turnover. On the other hand, although turnover and treadmilling are often used interchangeably, we show clear instances where this assumption would not be justified, for example, finding that rapid turnover is accompanied by slow treadmilling in highly dendritic Arp2/3 networks.
登录
查看更多内容
影响因子:
2.9
作者:
Blanchoin, L;Pollard, TD
通讯作者:
Pollard, TD
影响因子:
13.6
作者:
Tan TH;Malik-Garbi M;Abu-Shah E;Li J;Sharma A;MacKintosh FC;Keren K;Schmidt CF;Fakhri N
通讯作者:
Fakhri N
影响因子:
3.4
作者:
Pavel I Zhuravlev;Bryan S. Der;G. Papoian
通讯作者:
G. Papoian
DOI:
--
发表时间:
2006
期刊:
Journal of Cell Biology 175
影响因子:
--
作者:
Miyoshi I.;Isuji I.;Higasnida;C.;Hertzog;M.;Fujita;A.;Narumiya;S.;Scita;G.;Watanabe;N.
通讯作者:
N.
影响因子:
4.4
作者:
Floyd, Carlos;Papoian, Garegin A.;Jarzynski, Christopher
通讯作者:
Jarzynski, Christopher