Microtubule organization by the antagonistic mitotic motors kinesin-5 and kinesin-14.
Microtubule organization by the antagonistic mitotic motors kinesin-5 and kinesin-14.
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DOI:
10.1083/jcb.200910125
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发表时间:
2010-05-03
期刊:
影响因子:
--
通讯作者:
Surrey T
中科院分区:
文献类型:
--
作者:
Hentrich C;Surrey T
Interpolar microtubules are sorted by the directional instability resulting from antagonistic molecular motors, not a stable balance of force. During cell division, different molecular motors act synergistically to rearrange microtubules. Minus end–directed motors are thought to have a dual role: focusing microtubule ends to poles and establishing together with plus end–directed motors a balance of force between antiparallel microtubules in the spindle. We study here the competing action of Xenopus laevis kinesin-14 and -5 in vitro in situations in which these motors with opposite directionality cross-link and slide microtubules. We find that full-length kinesin-14 can form microtubule asters without additional factors, whereas kinesin-5 does not, likely reflecting an adaptation to mitotic function. A stable balance of force is not established between two antiparallel microtubules with these motors. Instead, directional instability is generated, promoting efficient motor and microtubule sorting. A nonmotor microtubule cross-linker can suppress directional instability but also impedes microtubule sorting, illustrating a conflict between stability and dynamicity of organization. These results establish the basic organizational properties of these antagonistic mitotic motors and a microtubule bundler.
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DOI:
10.1083/jcb.115.3.717
发表时间:
1991-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Butner KA;Kirschner MW
通讯作者:
Kirschner MW
影响因子:
64.5
作者:
Case, RB;Pierce, DW;Vale, RD
通讯作者:
Vale, RD
影响因子:
7.7
作者:
Bieling, Peter;Telley, Ivo A.;Surrey, Thomas
通讯作者:
Surrey, Thomas
影响因子:
3.7
作者:
Cahu, Julie;Olichon, Aurelien;Hentrich, Christian;Schek, Henry;Drinjakovic, Jovana;Zhang, Cunjie;Doherty-Kirby, Amanda;Lajoie, Gilles;Surrey, Thomas
通讯作者:
Surrey, Thomas
DOI:
10.1073/pnas.102692399
发表时间:
2002-05-14
影响因子:
11.1
作者:
Badoual, M;Jülicher, F;Prost, J
通讯作者:
Prost, J