Bazooka inhibits aPKC to limit antagonism of actomyosin networks during amnioserosa apical constriction
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چکیده
منابع مشابه
Bazooka inhibits aPKC to limit antagonism of actomyosin networks during amnioserosa apical constriction.
Cell shape changes drive tissue morphogenesis during animal development. An important example is the apical cell constriction that initiates tissue internalisation. Apical constriction can occur through a phase of cyclic assembly and disassembly of apicomedial actomyosin networks, followed by stabilisation of these networks. Delayed negative-feedback mechanisms typically underlie cyclic behavio...
متن کاملThe PAR complex regulates pulsed actomyosin contractions during amnioserosa apical constriction in Drosophila.
Apical constriction is a major mechanism underlying tissue internalization during development. This cell constriction typically requires actomyosin contractility. Thus, understanding apical constriction requires characterization of the mechanics and regulation of actomyosin assemblies. We have analyzed the relationship between myosin and the polarity regulators Par-6, aPKC and Bazooka (Par-3) (...
متن کاملaPKC Phosphorylation of Bazooka Defines the Apical/Lateral Border in Drosophila Epithelial Cells
Bazooka (PAR-3), PAR-6, and aPKC form a complex that plays a key role in the polarization of many cell types. In epithelial cells, however, Bazooka localizes below PAR-6 and aPKC at the apical/lateral junction. Here, we show that Baz is excluded from the apical aPKC domain in epithelia by aPKC phosphorylation, which disrupts the Baz/aPKC interaction. Removal of Baz from the complex is epithelia...
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Tissue morphogenesis requires stereotyped cell shape changes, such as apical cell constriction in the mesoderm and cell intercalation in the ventrolateral ectoderm of Drosophila. Both processes require force generation by an actomyosin network. The subcellular localization of Myosin-II (Myo-II) dictates these different morphogenetic processes. In the intercalating ectoderm Myo-II is mostly cort...
متن کاملStructure of the fission yeast actomyosin ring during constriction.
Cell division in many eukaryotes is driven by a ring containing actin and myosin. While much is known about the main proteins involved, the precise arrangement of actin filaments within the contractile machinery, and how force is transmitted to the membrane, remains unclear. Here we use cryosectioning and cryofocused ion beam milling to gain access to cryopreserved actomyosin rings in Schizosac...
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ژورنال
عنوان ژورنال: Development
سال: 2013
ISSN: 1477-9129,0950-1991
DOI: 10.1242/dev.098491