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- W1991137034 abstract "The Ser/Thr kinases of the PAR-1/MARK/Kin1 family are conserved regulators of polarity in epithelial and non-epithelial cells [1Pellettieri J. Seydoux G. Anterior-posterior polarity in C. elegans and Drosophila–PARallels and differences.Science. 2002; 298: 1946-1950Crossref PubMed Scopus (105) Google Scholar]. Drosophila PAR-1 localizes laterally in the follicular epithelium of the ovary [2Shulman J.M. Benton R. St Johnston D. The Drosophila homolog of C. elegans PAR-1 organizes the oocyte cytoskeleton and directs oskar mRNA localization to the posterior pole.Cell. 2000; 101: 377-388Abstract Full Text Full Text PDF PubMed Scopus (243) Google Scholar, 3Cox D.N. Lu B. Sun T.Q. Williams L.T. Jan Y.N. Drosophila par-1 is required for oocyte differentiation and microtubule organization.Curr. Biol. 2001; 11: 75-87Abstract Full Text Full Text PDF PubMed Scopus (118) Google Scholar], where it has been shown to function at two distinct levels: It stabilizes the cytoskeleton [3Cox D.N. Lu B. Sun T.Q. Williams L.T. Jan Y.N. Drosophila par-1 is required for oocyte differentiation and microtubule organization.Curr. Biol. 2001; 11: 75-87Abstract Full Text Full Text PDF PubMed Scopus (118) Google Scholar, 4Doerflinger H. Benton R. Shulman J.M. Johnston D.S. The role of PAR-1 in regulating the polarised microtubule cytoskeleton in the Drosophila follicular epithelium.Development. 2003; 130: 3965-3975Crossref PubMed Scopus (126) Google Scholar] and it regulates apical-basal polarity by directly inhibiting lateral assembly of the apical aPKC/Bazooka/PAR-6 complex [5Benton R. Johnston D.S. A conserved oligomerization domain in drosophila Bazooka/PAR-3 is important for apical localization and epithelial polarity.Curr. Biol. 2003; 13: 1330-1334Abstract Full Text Full Text PDF PubMed Scopus (117) Google Scholar, 6Benton R. Johnston D.S. Drosophila PAR-1 and 14–3-3 inhibit Bazooka/PAR-3 to establish complementary cortical domains in polarized cells.Cell. 2003; 115: 691-704Abstract Full Text Full Text PDF PubMed Scopus (306) Google Scholar]. However, it has been unclear how lateral localization of Drosophila PAR-1 is achieved and whether this localization contributes to epithelial polarity in vivo. Here we show that, through its spacer domain, Drosophila PAR-1 accumulates on the lateral plasma membrane (PM) in cells of the follicular epithelium (FE). Rescue experiments indicate that in FE cells PAR-1 kinase activity is essential for all the described functions of PAR-1. In contrast, the spacer domain of PAR-1 is required for apical-basal polarity and growth control but is dispensable for microtubule (MT) stabilization. Our data indicate that the spacer domain of PAR-1 is required for lateral PM localization of PAR-1 kinase and for development of a polarized FE." @default.
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- W1991137034 date "2005-02-01" @default.
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- W1991137034 title "The Drosophila PAR-1 Spacer Domain Is Required for Lateral Membrane Association and for Polarization of Follicular Epithelial Cells" @default.
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- W1991137034 doi "https://doi.org/10.1016/j.cub.2005.01.033" @default.
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