Early endosome functions depend on F-actin polymerization. Here, we describe a microscopy-based in vitro assay that reconstitutes the nucleation and polymerization of F-actin on early endosomal membranes in test tubes, thus rendering this complex series of reactions amenable to biochemical and genetic manipulations.
Muriel, O., Scott, C. C., Larios, J., Mercier, V., Gruenberg, J. In Vitro Polymerization of F-actin on Early Endosomes. J. Vis. Exp. (126), e55829, doi:10.3791/55829 (2017).