bioRxiv preprint doi: https://doi.org/10.1101/860684; this version posted December 2, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. **This manuscript is being posted in tandem with a manuscript by M. Kozak and M. Kaksonen which reports complementary findings in budding yeast. Title Liquid-like protein interactions catalyze assembly of endocytic vesicles Authors Kasey J. Daya, Grace Kagob, Liping Wangc, J Blair Richterc, Carl C. Haydena, Eileen M. Laferc, Jeanne C. Stachowiaka,b,* Affiliations a Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA; b Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX, 78712, USA; c Department of Biochemistry and Structural Biology, Center for Biomedical Neuroscience, The University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA * To whom correspondence should be addressed:
[email protected]. 1 bioRxiv preprint doi: https://doi.org/10.1101/860684; this version posted December 2, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abstract During clathrin-mediated endocytosis, dozens of proteins assemble into an interconnected network at the plasma membrane. As early initiators of endocytosis, Eps15 and Fcho1 are responsible for locally concentrating downstream components on the membrane surface.