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• W2035447681 abstract "Although many actin binding proteins such as cortactin and the Arp2/3 activator WASH localize at the centrosome, the presence and conformation of actin at the centrosome has remained elusive. Here, we report the localization of actin at the centrosome in interphase but not in mitotic MDA-MB-231 cells. Centrosomal actin was detected with the anti-actin antibody 1C7 that recognizes antiparallel (“lower dimer”) actin dimers. In addition, we report the transient presence of the Arp2/3 complex at the pericentriolar matrix but not at the centrioles of interphase HEK 293T cells. Overexpression of an Arp2/3 component resulted in expansion of the pericentriolar matrix and selective accumulation of the Arp2/3 component in the pericentriolar matrix. Altogether, we hypothesize that the centrosome transiently recruits Arp2/3 to perform processes such as centrosome separation prior to mitotic entry, whereas the observed constitutive centrosomal actin staining in interphase cells reinforces the current model of actin-based centrosome reorientation toward the leading edge in migrating cells." @default.
• W2035447681 created "2016-06-24" @default.
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• W2035447681 date "2011-01-01" @default.
• W2035447681 modified "2023-10-11" @default.
• W2035447681 title "Actin and Arp2/3 localize at the centrosome of interphase cells" @default.
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• W2035447681 doi "https://doi.org/10.1016/j.bbrc.2010.11.084" @default.
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