Guanine Nucleotide Exchange FactorsRho Guanine Nucleotide Exchange FactorsGuanine NucleotidesGuanosine DiphosphateGuanosine Triphosphateras Guanine Nucleotide Exchange FactorsGTP-Binding ProteinsProto-Oncogene Proteins c-vavras-GRF1cdc42 GTP-Binding Proteinrac1 GTP-Binding Proteinrho GTP-Binding ProteinsADP-Ribosylation Factorsrac GTP-Binding Proteinsrap1 GTP-Binding ProteinsrhoA GTP-Binding ProteinProtein BindingGuanine Nucleotide-Releasing Factor 2GTPase-Activating ProteinsMolecular Sequence DataSOS1 ProteinProtein Structure, TertiaryAmino Acid SequenceADP-Ribosylation Factor 1GTP Phosphohydrolasesral Guanine Nucleotide Exchange FactorSignal TransductionSon of Sevenless Proteinsrab GTP-Binding ProteinsEukaryotic Initiation Factor-2Bras ProteinsGuanineral GTP-Binding Proteinsrap GTP-Binding ProteinsBinding SitesCOS CellsProteinsGuanine Nucleotide Dissociation InhibitorsCell LineSequence Homology, Amino AcidNucleotidesrab5 GTP-Binding ProteinsMutationGTP-Binding Protein alpha Subunits, G12-G13Models, MolecularAdaptor Proteins, Signal TransducingCoat Protein Complex IEnzyme ActivationMonomeric GTP-Binding ProteinsKineticsCell Cycle ProteinsRecombinant Fusion ProteinsTwo-Hybrid System TechniquesGuanosine 5'-O-(3-Thiotriphosphate)p21-Activated KinasesProtein TransportTransfectionBase SequenceEukaryotic Initiation Factor-23T3 CellsActinsran GTP-Binding ProteinProto-Oncogene ProteinsPhosphorylationHSP110 Heat-Shock ProteinsProto-Oncogene Proteins p21(ras)Recombinant ProteinsModels, BiologicalHeLa CellsSaccharomyces cerevisiae Proteinsrab1 GTP-Binding ProteinsCell MembraneCarrier ProteinsNIH 3T3 CellsBrefeldin AProtein ConformationCloning, Molecularrho-Specific Guanine Nucleotide Dissociation InhibitorsSaccharomyces cerevisiaeCell MovementCytoskeletonsrc Homology DomainsOncogene ProteinsCrystallography, X-RayA Kinase Anchor ProteinsFungal ProteinsStress FibersGolgi ApparatusMicroscopy, Fluorescencecdc42 GTP-Binding Protein, Saccharomyces cerevisiaeGRB2 Adaptor ProteinCells, Culturedras GTPase-Activating ProteinsPhosphoproteinsCercopithecus aethiopsSequence AlignmentMembrane ProteinsProtein-Serine-Threonine KinasesCatalysisEscherichia coli