SEC14-like condensate phase transitions at plasma membranes regulate root growth in Arabidopsis

The mechanisms that drive protein phase transitions are unclear. This study in plants shows that an intracellular liquid condensate formed by the lipid transferase SFH8 associates with membranes; when a short fragment of SFH8 is removed by the caspase-like protease ESP, it transforms into a solid filament that can modulate root development.