Mechanistic logic underlying the axonal transport of cytosolic proteins.
Mechanistic logic underlying the axonal transport of cytosolic proteins.
复制标题
DOI:
10.1016/j.neuron.2011.03.022
复制
发表时间:
2011-05-12
期刊:
影响因子:
16.2
通讯作者:
Roy S
中科院分区:
文献类型:
--
作者:
Scott DA;Das U;Tang Y;Roy S
Proteins vital to presynaptic function are synthesized in the neuronal perikarya and delivered into synapses via two modes of axonal transport. While membrane-anchoring proteins are conveyed in fast axonal transport via motor-driven vesicles, cytosolic proteins travel in slow axonal transport; via mechanisms that are poorly understood. We found that in cultured axons, populations of cytosolic proteins tagged to photoactivable-GFP (PA-GFP) move with a slow motor-dependent anterograde bias; distinct from vesicular-trafficking or diffusion of untagged PA-GFP. The overall bias is likely generated by an intricate particle-kinetics involving transient assembly and short-range vectorial spurts. In-vivo biochemical studies reveal that cytosolic proteins are organized into higher-order structures within axon-enriched fractions that are largely segregated from vesicles. Data-driven biophysical modeling best predicts a scenario where soluble molecules dynamically assemble into mobile supra-molecular structures. We propose a model where cytosolic proteins are transported by dynamically assembling into multi-protein complexes that are directly/indirectly conveyed by motors.
登录
查看更多内容
DOI:
10.1073/pnas.0703094104
发表时间:
2007-10-09
影响因子:
11.1
作者:
Brangwynne, Clifford P.;MacKintosh, F. C.;Weitz, David A.
通讯作者:
Weitz, David A.
影响因子:
7.8
作者:
Brangwynne, Clifford P.;Koenderink, Gijsje H.;MacKintosh, Frederick C.;Weitz, David A.
通讯作者:
Weitz, David A.
影响因子:
5.1
作者:
PAGGI, P;PETRUCCI, TC
通讯作者:
PETRUCCI, TC
影响因子:
5.3
作者:
Roy, S;Coffee, P;Black, MM
通讯作者:
Black, MM
影响因子:
2.9
作者:
PFISTER, KK;WAGNER, MC;BRADY, ST
通讯作者:
BRADY, ST