The pioneering endocytic protein FCHo2 promotes clathrin-coated structures assembly via the formation of phosphoinositide-enriched domains at the boundary of cargo receptors.
When challenged by energetic stresses triggered by hypoxia and ATP inhibition, plasma membrane PI4P and PIP2 in cells undergo dramatic turnovers that have profound impact on many cellular processes including electrostatic PM targeting of numerous polybasic proteins.
The anchoring properties of CaV β2 subunits to the plasma membrane determine the biophysical states of CaV2.2 channels by regulating PIP2 coupling to the nonspecific phospholipid-binding site in the I–II loop.
PI(4,5)P2 plays a much broader role during the HIV-1 particle assembly process than assumed; it is indispensable not only for recruitment of Gag to the plasma membrane but also for the maintenance of Gag assemblies.
Synergistic interactions with PI(4,5)P2 and activated Rho1, which are enriched at the apical membrane of tubular organs, facilitate tight apical targeting of the formin Diaphanous.
Ramiro Nández, Daniel M Balkin ... Pietro De Camilli
Studies of Lowe syndrome patient cells, which lack the inositol 5-phosphatase OCRL, suggest that a defect in endocytosis plays a role in the pathological manifestations of the disease.