Here we describe a protocol to investigate the prenylation and guanosine-5'-triphosphate (GTP)-loading of Rho GTPase. This protocol consists of two detailed methods, namely membrane fractionation and a GTPase-linked immunosorbent assay. The protocol can be used for measuring the prenylation and GTP loading of different other small GTPases.
Alizadeh, J., Shojaei, S., da Silva Rosa, S., Rezaei Moghadam, A., Zeki, A. A., Hashemi, M., Los, M. J., Gordon, J. W., Ghavami, S. Detection of Small GTPase Prenylation and GTP Binding Using Membrane Fractionation and GTPase-linked Immunosorbent Assay. J. Vis. Exp. (141), e57646, doi:10.3791/57646 (2018).