Electron-tomographic analysis of intraflagellar transport particle trains in situ.
Electron-tomographic analysis of intraflagellar transport particle trains in situ.
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DOI:
10.1083/jcb.200905103
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发表时间:
2009-10-05
期刊:
影响因子:
--
通讯作者:
Lupetti P
中科院分区:
文献类型:
--
作者:
Pigino G;Geimer S;Lanzavecchia S;Paccagnini E;Cantele F;Diener DR;Rosenbaum JL;Lupetti P
Ultrastructural study of Chlamydomonas cilia shows that anterograde IFT particles form trains that are long and narrow, while retrograde IFT form short, compact particle trains. Intraflagellar transport (IFT) is the bidirectional movement of multipolypeptide particles between the ciliary membrane and the axonemal microtubules, and is required for the assembly, maintenance, and sensory function of cilia and flagella. In this paper, we present the first high-resolution ultrastructural analysis of trains of flagellar IFT particles, using transmission electron microscopy and electron-tomographic analysis of sections from flat-embedded Chlamydomonas reinhardtii cells. Using wild-type and mutant cells with defects in IFT, we identified two different types of IFT trains: long, narrow trains responsible for anterograde transport; and short, compact trains underlying retrograde IFT. Both types of trains have characteristic repeats and patterns that vary as one sections longitudinally through the trains of particles. The individual IFT particles are highly complex, bridged to each other and to the outer doublet microtubules, and are closely apposed to the inner surface of the flagellar membrane.
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影响因子:
7.8
作者:
Pazour, GJ;Wilkerson, CG;Witman, GB
通讯作者:
Witman, GB
DOI:
10.1083/jcb.200406148
发表时间:
2004-08-30
期刊:
The Journal of cell biology
影响因子:
--
作者:
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通讯作者:
Nakatsugawa M
影响因子:
7.8
作者:
Marshall, W F;Rosenbaum, J L
通讯作者:
Rosenbaum, J L
影响因子:
4.6
作者:
Bae, Young-Kyung;Qin, Hongmin;Barr, Maureen M.
通讯作者:
Barr, Maureen M.
影响因子:
3
作者:
Kremer, JR;Mastronarde, DN;McIntosh, JR
通讯作者:
McIntosh, JR