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The TAO kinase KIN-18 regulates contractility and establishment of polarity in the C. elegans embryo
- Source :
-
Developmental Biology . Jan2013, Vol. 373 Issue 1, p26-38. 13p. - Publication Year :
- 2013
-
Abstract
- Abstract: Cell polarity is crucial for many aspects of cell and developmental biology. Cytoskeleton remodeling plays an essential role in the establishment of cell polarity. In the Caenorhabditis elegans one-cell embryo, while the actomyosin cytoskeleton is required for asymmetric localization of the PAR proteins, anterior PAR proteins exert a feedback regulation on contractility. Here we identify the TAO kinase KIN-18 as a regulator of cortical contractility in the early embryo. KIN-18 negatively regulates cortical contractions in a RHO-1 dependent manner and regulates RHO-1 cortical localization. KIN-18 contributes to polarity establishment by regulating the position of the boundary between anterior and posterior PAR proteins. Although KIN-18 is involved in polarity establishment, depletion of KIN-18 restores contractions in a par-3 mutant indicating that kin-18 is epistatic to par-3. We suggest a model in which KIN-18 provides a link between the cytoskeleton remodeling and polarity machineries, uncovering a role for TAO kinases in the regulation of cell polarity. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00121606
- Volume :
- 373
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Developmental Biology
- Publication Type :
- Academic Journal
- Accession number :
- 83576402
- Full Text :
- https://doi.org/10.1016/j.ydbio.2012.10.001