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CLIP-170 tethers kinetochores to microtubule plus ends against poleward force by dynein for stable kinetochore-microtubule attachment
被引:5
|作者:
Amin, Mohammed Abdullahel
[1
]
Kobayashi, Kinue
[1
]
Tanaka, Kozo
[1
]
机构:
[1] Tohoku Univ, Dept Mol Oncol, Inst Dev Aging & Canc, Sendai, Miyagi 9808575, Japan
关键词:
Cytoplasmic linker protein-170;
Dynein;
Chromosome alignment;
Kinetochore;
Microtubule;
Mitosis;
CHROMOSOME ALIGNMENT;
MITOSIS;
P150(GLUED);
BINDING;
PLK1;
AUTOINHIBITION;
CONGRESSION;
MECHANISMS;
DYNACTIN;
TRACKING;
D O I:
10.1016/j.febslet.2015.07.036
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
The cytoplasmic linker protein (CLIP)-170 localizes to kinetochores and is suggested to function in stable attachment of kinetochores to microtubule ends. Here we show that defects in kinetochore-microtubule attachment and chromosome alignment in CLIP-170-depleted cells were rescued by co-depletion of p150glued, a dynactin subunit required for kinetochore localization of CLIP-170. CLIP-170 recruited p150glued to microtubule ends. Kinetochore localization at microtubule ends was perturbed by CLIP-170 depletion, which was rescued by co-depleting p150glued. Our results imply that CLIP-170 tethers kinetochores to microtubule ends against the dynein-mediated pole-ward force to slide kinetochores along microtubules, facilitating the stable kinetochore attachment to microtubules. (C) 2015 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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页码:2739 / 2746
页数:8
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