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Curr Opin Cell Biol. 2005 Dec;17(6):658-63. Epub 2005 Oct 21.

Heterotrimeric G proteins and regulation of size asymmetry during cell division.

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Institut Curie, CNRS UMR 144, 26 rue d'Ulm, Paris, 75248 France.


The generation of daughter cells of different fate and size depends on the orientation, positioning and morphology of the mitotic spindle. In both C. elegans and Drosophila, heterotrimeric G proteins have emerged as central and conserved regulators of this process. Although the same molecular players are involved in worms and flies, there are clear differences in the mechanisms used. Interestingly, recent work in mammalian cells suggests that heterotrimeric G proteins may control spindle positioning in higher organisms during symmetric and asymmetric cell divisions.

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