Journal
CELL
Volume 114, Issue 2, Pages 153-156Publisher
CELL PRESS
DOI: 10.1016/S0092-8674(03)00553-1
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Rho GTPases control fundamental aspects of neutrophil chemotaxis: establishment of front and back and orientation toward the chemoattractant. Two reports in this issue show that activated Cdc42 at the leading edge helps orient the cell's axis in a signaling complex with Gbetagamma, PAK1, and PIXalpha; while Rho, activated via Galpha13, mediates formation of the uropod, which then interacts by mutual negative feedback with the front to reinforce polarization (Li et al., 2003 [this issue of Cell]; Xu et al., 2003 [this issue of Cell]).
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