Microtubule minus end motors kinesin-14 and dynein drive nuclear congression in parallel pathways.
Microtubule minus end motors kinesin-14 and dynein drive nuclear congression in parallel pathways.
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微管负端电动机动力素14和动力蛋白在平行途径中驱动核国会。
DOI:
10.1083/jcb.201409087
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发表时间:
2015-04-13
期刊:
影响因子:
--
通讯作者:
Tran PT
中科院分区:
文献类型:
--
作者:
Scheffler K;Minnes R;Fraisier V;Paoletti A;Tran PT
Long-term imaging via microfluidic chambers shows that two minus end–directed motors, dynein and Klp2, work in parallel at distinct subcellular structures to promote efficient nuclear congression. Microtubules (MTs) and associated motors play a central role in nuclear migration, which is crucial for diverse biological functions including cell division, polarity, and sexual reproduction. In this paper, we report a dual mechanism underlying nuclear congression during fission yeast karyogamy upon mating of haploid cells. Using microfluidic chambers for long-term imaging, we captured the precise timing of nuclear congression and identified two minus end–directed motors operating in parallel in this process. Kinesin-14 Klp2 associated with MTs may cross-link and slide antiparallel MTs emanating from the two nuclei, whereas dynein accumulating at spindle pole bodies (SPBs) may pull MTs nucleated from the opposite SPB. Klp2-dependent nuclear congression proceeds at constant speed, whereas dynein accumulation results in an increase of nuclear velocity over time. Surprisingly, the light intermediate chain Dli1, but not dynactin, is required for this previously unknown function of dynein. We conclude that efficient nuclear congression depends on the cooperation of two minus end–directed motors.
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DOI:
10.1083/jcb.201004118
发表时间:
2010-10-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
Fridolfsson HN;Starr DA
通讯作者:
Starr DA
影响因子:
9.2
作者:
Almonacid, Maria;Celton-Morizur, Severine;Jakubowski, Jennifer L.;Dingli, Florent;Loew, Damarys;Mayeux, Adeline;Chen, Jun-Song;Gould, Kathleen L.;Clifford, Dawn M.;Paoletti, Anne
通讯作者:
Paoletti, Anne
影响因子:
56.9
作者:
CHIKASHIGE, Y;DING, DQ;HIRAOKA, Y
通讯作者:
HIRAOKA, Y
影响因子:
56.9
作者:
Carazo-Salas, RE;Antony, C;Nurse, P
通讯作者:
Nurse, P
影响因子:
64.5
作者:
MELUH, PB;ROSE, MD
通讯作者:
ROSE, MD