FORMIN Stable Kinetochore-Microtubule Attachments
نویسندگان
چکیده
منابع مشابه
A TOG Protein Confers Tension Sensitivity to Kinetochore-Microtubule Attachments
The development and survival of all organisms depends on equal partitioning of their genomes during cell division. Accurate chromosome segregation requires selective stabilization of kinetochore-microtubule attachments that come under tension due to opposing pulling forces exerted on sister kinetochores by dynamic microtubule tips. Here, we show that the XMAP215 family member, Stu2, makes a maj...
متن کاملElevated polar ejection forces stabilize kinetochore–microtubule attachments
Chromosome biorientation promotes congression and generates tension that stabilizes kinetochore-microtubule (kt-MT) interactions. Forces produced by molecular motors also contribute to chromosome alignment, but their impact on kt-MT attachment stability is unclear. A critical force that acts on chromosomes is the kinesin-10-dependent polar ejection force (PEF). PEFs are proposed to facilitate c...
متن کاملConformational mechanism for the stability of microtubule-kinetochore attachments.
Regulating the stability of microtubule (MT)-kinetochore attachments is fundamental to avoiding mitotic errors and ensuring proper chromosome segregation during cell division. Although biochemical factors involved in this process have been identified, their mechanics still need to be better understood. Here we introduce and simulate a mechanical model of MT-kinetochore interactions in which the...
متن کاملMechanisms to Avoid and Correct Erroneous Kinetochore-Microtubule Attachments
In dividing vertebrate cells multiple microtubules must connect to mitotic kinetochores in a highly stereotypical manner, with each sister kinetochore forming microtubule attachments to only one spindle pole. The exact sequence of events by which this goal is achieved varies considerably from cell to cell because of the variable locations of kinetochores and spindle poles, and randomness of ini...
متن کاملCLIP-170 facilitates the formation of kinetochore-microtubule attachments.
CLIP-170 is a microtubule 'plus end tracking' protein involved in several microtubule-dependent processes in interphase. At the onset of mitosis, CLIP-170 localizes to kinetochores, but at metaphase, it is no longer detectable at kinetochores. Although RNA interference (RNAi) experiments have suggested an essential role for CLIP-170 during mitosis, the molecular function of CLIP-170 in mitosis ...
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ژورنال
عنوان ژورنال: Developmental Cell
سال: 2011
ISSN: 1534-5807
DOI: 10.1016/j.devcel.2011.03.001