Leep1 interacts with PIP3 and the Scar/WAVE complex to regulate cell migration and macropinocytosis.

ABSTRACT: Polarity is essential for diverse functions in many cell types. Establishing polarity requires targeting a network of specific signaling and cytoskeleton molecules to different subregions of the cell, yet the full complement of polarity regulators and how their activities are integrated over space and time to form morphologically and functionally distinct domains remain to be uncovered. Here, by using the model system Dictyostelium and exploiting the characteristic chemoattractant-stimulated translocation of polarly distributed molecules, we developed a proteomic screening approach, through which we identified a leucine-rich repeat domain-containing protein we named Leep1 as a novel polarity regulator. We combined imaging, biochemical, and phenotypic analyses to demonstrate that Leep1 loca

SUBMITTER: Yang Y 

PROVIDER: S-EPMC8127007 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature