Central spindle robustness by PRC1-centralspindlin interaction
نویسندگان
چکیده
منابع مشابه
Direct interaction between centralspindlin and PRC1 reinforces mechanical resilience of the central spindle
During animal cell division, the central spindle, an anti-parallel microtubule bundle structure formed between segregating chromosomes during anaphase, cooperates with astral microtubules to position the cleavage furrow. Because the central spindle is the only structure linking the two halves of the mitotic spindle, it is under mechanical tension from dynein-generated cortical pulling forces, w...
متن کاملClustering of Centralspindlin Is Essential for Its Accumulation to the Central Spindle and the Midbody
Cytokinesis in animal cells requires the central spindle and midbody, which contain prominent microtubule bundles. Centralspindlin, a heterotetrameric complex consisting of kinesin-6 and RhoGAP (Rho-family GTPase-activating protein) subunits, is essential for the formation of these structures. Centralspindlin becomes precisely localized to the central spindle, where it promotes the equatorial r...
متن کاملEssential roles of KIF4 and its binding partner PRC1 in organized central spindle midzone formation.
A number of proteins accumulate in the anaphase spindle midzone, but the interaction and precise role of these proteins in midzone organization remain obscure. Here, we found that the microtubule-bundling protein PRC1 bound separately to the three motor proteins, KIF4, MKLP1 and CENP-E, but not to the chromosomal passenger proteins. In KIF4-deficient cells, the central spindle was disorganized,...
متن کاملFeo, the Drosophila Homolog of PRC1, Is Required for Central-Spindle Formation and Cytokinesis
We performed a functional analysis of fascetto (feo), a Drosophila gene that encodes a protein homologous to the Ase1p/PRC1/MAP65 conserved family of microtubule-associated proteins (MAPs). These MAPs are enriched at the spindle midzone in yeast and mammals and at the fragmoplast in plants, and are essential for the organization and function of these microtubule arrays. Here we show that the Fe...
متن کاملAblation of PRC1 by small interfering RNA demonstrates that cytokinetic abscission requires a central spindle bundle in mammalian cells, whereas completion of furrowing does not.
The temporal and spatial regulation of cytokinesis requires an interaction between the anaphase mitotic spindle and the cell cortex. However, the relative roles of the spindle asters or the central spindle bundle are not clear in mammalian cells. The central spindle normally serves as a platform to localize key regulators of cell cleavage, including passenger proteins. Using time-lapse and immu...
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ژورنال
عنوان ژورنال: Cell Cycle
سال: 2015
ISSN: 1538-4101,1551-4005
DOI: 10.1080/15384101.2015.1093447