Cell biologists have long debated the role of clathrin in curving membranes during endocytosis. New findings from Cail et al. (2022. J. Cell Biol.https://doi.org/10.1083/jcb.202109013) take an innovative approach to directly demonstrate the indispensable functions of both clathrin and its adaptor network in shaping endocytic vesicles.
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