full-length GEFs
Construct PatternFull-length guanine nucleotide exchange factor (GEF) constructs were overexpressed in primary human endothelial cells and quantitatively profiled with single-cell FRET Rho GTPase biosensors to compare their ability to activate Cdc42 and Rac1. In this assay context, PLEKHG2, FGD1, PLEKHG1, and PREX1 produced the strongest Cdc42 activation, and FGD1 showed the highest selectivity.