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Assaying Rho GTPase–dependent processes in Dictyostelium discoideum

Marinovic, Maja; Xiong, Huajiang; Rivero Crespo, Francisco; Weber, Igor


Maja Marinovic

Huajiang Xiong

Francisco Rivero Crespo

Igor Weber


The model organism D. discoideum is well-suited to investigate basic questions of molecular and cell biology, particularly those related to the structure, regulation and dynamics of the cytoskeleton, signal transduction, cell-cell adhesion and development. D. discoideum cells make use of Rho-regulated signaling pathways to reorganize the actin cytoskeleton during chemotaxis, endocytosis and cytokinesis. In this organism the Rho family encompasses 20 members, several belonging to the Rac subfamily, but there are no representatives of the Cdc42 and Rho subfamilies. Here we present protocols suitable for monitoring the actin polymerization response and the activation of Rac upon stimulation of aggregation competent cells with the chemoattractant cAMP, and for monitoring the localization and dynamics of Rac activity in live cells.

Journal Article Type Article
Publication Date Jul 31, 2018
Print ISSN 1064-3745
Peer Reviewed Peer Reviewed
Volume 1821
Pages 371-392
APA6 Citation Marinovic, M., Xiong, H., Rivero Crespo, F., & Weber, I. (2018). Assaying Rho GTPase–dependent processes in Dictyostelium discoideum. Methods in molecular biology, 1821, 371-392. doi:10.1007/978-1-4939-8612-5_25
Keywords Actin polymerization; cAMP; Chemotaxis; Dictyostelium; Fluorescent probes; FRET; GTPase-binding domain; Pull-down assay, Rac
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