Cytoplasmic asters
WebIn a number of studies Taxol has been reported to induce cytoplasmic MTs asters in cells treated with the drug [e.g., [9,10,28, 29]]. Most of these studies have used Taxol concentrations above 0. ... WebRemarkably, the asters have been observed only in the anterior cytoplasm of the parthenogenetic eggs (Riparbelli and Callaini, 2003; Fig. 8 C and D). Aster formation …
Cytoplasmic asters
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WebJan 1, 2012 · The cores of these asters are composed of a few PCM components, including pericentrin and gamma-tubulin. Based on this composition and the ability of these … WebDec 1, 2011 · Abstract. Cytasters (cytoplasmic asters) are centriole-based nucleation centers of microtubule polymerization that are observable in large numbers in the …
WebSep 1, 1998 · These unique results not only provide a demonstration that cytoplasmic dynein is required for the formation of mitotic asters in N. haematococca; they also … WebApr 15, 2024 · The sperm aster is situated in the inner cytoplasm and its MTs are connected to the parallel MTs in the shear zone (Houliston and Elinson, 1991a). The cortex region consists of a plasma membrane, actin cytoskeletal filaments, and the endoplasmic reticulum (ER) ( Houliston and Elinson, 1991a ).
WebRemarkably, the asters have been observed only in the anterior cytoplasm of the parthenogenetic eggs (Riparbelli and Callaini, 2003; Fig. 8 C and D). Aster formation presumably involves the overriding of intrinsic control points that prevent centrosome self-assembly in dioic eggs, thus avoiding attempt to develop in the absence of a male gamete. WebSep 1, 1998 · These unique results not only provide a demonstration that cytoplasmic dynein is required for the formation of mitotic asters in N. haematococca; they also represent the first report of mitotic phenotypes in a dynein mutant of any filamentous fungus and the first cytoplasmic dynein mutant of any organism whose mitotic phenotypes …
WebJan 1, 2012 · At the time of nuclear envelope breakdown (NEBD), the asters on the pronuclear surface massively polymerise microtubules toward the chromosomes due to Ran GTPase, whereas the cytoplasmic asters become destabilised and lose their polymerised microtubule signal, pointing toward an inactivation of their MTOC function.
WebThe cytoplasmic foci were larger and more abundant than in untreated oocytes (Table 1). Double staining revealed that the anti-γ- tubulin reactivity was found in the center of all the asters... graphs on anxietyWebBackground: Cytasters (cytoplasmic asters) are centriole-based nucleation centers of microtubule polymerization that are observable in large numbers in the cortical cytoplasm of the egg and zygote of bilaterian organisms. In both protostome and deuterostome taxa, cytasters have been described to develop during oogenesis from vesicles chi st vincent sherwood clinicWebNov 1, 2003 · So the cytoplasmic asters as well as nucleation of microtubules from the spindle poles is solely due to DOC1R depletion. Altogether, our experiments demonstrate that DOC1R regulates microtubule organization at least in metaphase II (see Discussion). The depletion of DOC1R induces severe damage to the microtubule cytoskeleton, which … graphs on coral bleachingWebFeb 15, 2024 · The cytoplasm is a complex material, whose rheological properties and their impact on cellular functions are emerging as important concepts in cell biology. Here, we probed cytoplasm … chi st vincent sherwoodWebDec 1, 2004 · Cytoplasmic asters persist in the cytoplasm (arrows) and around the donor nucleus (arrowheads). At 8–12 h (B 2), a large pseudopronucleus develops and asters … chi st vincent searcyWebMar 24, 2024 · In the prevailing model, asters are pulled through the cytoplasm by dynein anchored on organelles (7). A recent study proposed that all components of the cytoplasm move collectively with the aster … graphs on carschi st vincent sleep study center hot springs