Search results for "rhoB GTP-Binding Protein"

showing 4 items of 14 documents

rhoB encoding a UV-inducible Ras-related small GTP-binding protein is regulated by GTPases of the Rho family and independent of JNK, ERK, and p38 MAP…

1998

The small GTPase RhoB is immediate-early inducible by DNA damaging treatments and thus part of the early response of eukaryotic cells to genotoxic stress. To investigate the regulation of this cellular response, we isolated the gene for rhoB from a mouse genomic library. Sequence analysis of the rhoB gene showed that its coding region does not contain introns. The promoter region of rhoB harbors regulatory elements such as TATA, CAAT, and Sp1 boxes but not consensus sequences for AP-1, Elk-1, or c-Jun/ATF-2. The rhoB promoter was activated by UV irradiation, but not by 12-O-tetradecanoylphorbol-13-acetate treatment. rhoB promoter deletion constructs revealed a fragment of 0.17 kilobases in …

Ultraviolet RaysRHOBMolecular Sequence DataMAP Kinase Kinase Kinase 1BiologyProtein Serine-Threonine KinasesBiochemistryp38 Mitogen-Activated Protein KinasesGTP PhosphohydrolasesWortmanninchemistry.chemical_compoundMiceGTP-Binding ProteinsRhoB GTP-Binding ProteinAnimalsCloning MolecularEnzyme InhibitorsPromoter Regions GeneticrhoB GTP-Binding ProteinMolecular BiologyPhosphoinositide-3 Kinase InhibitorsMAP kinase kinase kinaseBase SequenceKinaseMEK inhibitorJNK Mitogen-Activated Protein KinasesMembrane ProteinsCell BiologyMolecular biologychemistryMitogen-activated protein kinaseCalcium-Calmodulin-Dependent Protein Kinasesbiology.proteinras ProteinsSignal transductionMitogen-Activated Protein KinasesThe Journal of biological chemistry
researchProduct

Activation of NF-kappaB and IL-8 by yersinia enterocolitica invasin protein is conferred by engagement of rac1 and MAP kinase cascades.

2003

International audience; Yersinia enterocolitica triggers activation of the nuclear factor (NF)-kappaB and production of the proinflammatory chemokine interleukin (IL)-8 in intestinal epithelial cells. This activation is due to adhesion of the bacteria via their outer membrane protein invasin to the host cells. Using Clostridium difficile toxins that specifically inactivate small GTPases, and transfection of inhibitory proteins of the Rho-GTPases, we demonstrate that Rac1, but not Cdc42 or Rho, is required for activation of NF-kappaB by invasin. Invasin activated the mitogen activated protein kinases (MAPK) p38 and c-Jun N-terminal protein kinase (JNK) but not extracellular signal regulated …

rac1 GTP-Binding ProteinMAP Kinase Kinase 4MAP Kinase Signaling SystemRNA Stability[SDV]Life Sciences [q-bio]ImmunologyMitogen-activated protein kinase kinasep38 Mitogen-Activated Protein KinasesMicrobiologyBacterial AdhesionMAP2K703 medical and health sciencesBacterial ProteinsVirologyHumansASK1RNA Messengerc-RafAdhesins Bacterialcdc42 GTP-Binding ProteinrhoB GTP-Binding ProteinYersinia enterocolitica030304 developmental biologyMitogen-Activated Protein Kinase Kinases0303 health sciencesbiologyMAP kinase kinase kinase030306 microbiologyInterleukin-8Cyclin-dependent kinase 2JNK Mitogen-Activated Protein KinasesNF-kappa BProtein kinase RMolecular biologyCell biologybiology.proteinCyclin-dependent kinase 9Mitogen-Activated Protein KinasesrhoA GTP-Binding ProteinHeLa CellsSignal Transduction
researchProduct

Rho GTPases in human breast tumours: expression and mutation analyses and correlation with clinical parameters

2002

In the present study, we addressed the question of a putative relevance of Rho proteins in tumour progression by analysing their expression on protein and mRNA level in breast tumours. We show that the level of RhoA, RhoB, Rac1 and Cdc42 protein is largely enhanced in all tumour samples analysed (n=15) as compared to normal tissues originating from the same individual. The same is true for 32P-ADP-ribosylation of Rho proteins which is catalysed by Clostridium botulinum exoenzyme C3. Also the amount of Rho-GDI and ERK2 as well as the level of overall 32P-GTP binding acvitity was tumour-specific elevated, yet to a lower extent than Rho proteins. Although the amount of Rho proteins was enhance…

rac1 GTP-Binding Proteinrho GTP-Binding ProteinsCancer ResearchRHOAProliferation indexRHOBBlotting WesternDNA Mutational AnalysisRhoCGene ExpressionBreast NeoplasmsRAC1breast tumoursCDC42Polymerase Chain ReactionRho GTPasesRhoB GTP-Binding ProteinHumansBreastRNA Messengercdc42 GTP-Binding ProteinrhoB GTP-Binding Proteinmutation analysisADP Ribose TransferasesMitogen-Activated Protein Kinase 1biologyGenetics and GenomicsMolecular biologyOncologyCdc42 GTP-Binding ProteinMutationtumour progressionDisease Progressionbiology.proteinFemaleGuanosine TriphosphaterhoA GTP-Binding ProteinBritish Journal of Cancer
researchProduct

Rho GTPases are over-expressed in human tumors.

1999

Small GTPases of the Rho family are involved in the regulation of a variety of cellular processes, such as the organization of the microfilamental network, cell-cell contact and malignant transformation. To address the question of whether Rho proteins are involved in carcinogenesis in man, we compared their expression in tumors from colon, breast and lung with that of the corresponding normal tissue originating from the same patient. As shown by Rho-specific 32P-ADP-ribosylation, as well as Western-blot analysis, the amount of RhoA protein was largely increased in all 3 types of tumors tested. The most dramatic differences in the expression of Rho GTPases were observed in breast tissue. All…

rho GTP-Binding ProteinsCancer ResearchPathologymedicine.medical_specialtyRHOALung NeoplasmsColonBreast NeoplasmsCell Cycle ProteinsGTPaseCDC42medicine.disease_causeMalignant transformationGTP PhosphohydrolasesGTP-Binding ProteinsmedicineHumansrho-Specific Guanine Nucleotide Dissociation InhibitorsBreastcdc42 GTP-Binding ProteinrhoB GTP-Binding ProteinLungGuanine Nucleotide Dissociation InhibitorsMitogen-Activated Protein Kinase 1Adenosine Diphosphate RibosebiologyCancerMembrane Proteinsmedicine.diseaseImmunohistochemistryrac GTP-Binding ProteinsOncologyrhoC GTP-Binding ProteinCalcium-Calmodulin-Dependent Protein KinasesColonic Neoplasmsbiology.proteinCancer researchImmunohistochemistryCarcinogenesisrhoA GTP-Binding ProteinRhoC GTP-Binding ProteinInternational journal of cancer
researchProduct