2011
The Kinases MEKK2 and MEKK3 Regulate Transforming Growth Factor-β-Mediated Helper T Cell Differentiation
Chang X, Liu F, Wang X, Lin A, Zhao H, Su B. The Kinases MEKK2 and MEKK3 Regulate Transforming Growth Factor-β-Mediated Helper T Cell Differentiation. Immunity 2011, 34: 201-212. PMID: 21333552, PMCID: PMC3073014, DOI: 10.1016/j.immuni.2011.01.017.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBone Marrow TransplantationCell DifferentiationEnzyme ActivationForkhead Transcription FactorsLymphocyte CountLymphopeniaMAP Kinase Kinase Kinase 2MAP Kinase Kinase Kinase 3MAP Kinase Signaling SystemMiceMice, Inbred C57BLMice, KnockoutMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3PhosphorylationProtein Processing, Post-TranslationalProtein Structure, TertiaryReceptors, Antigen, T-CellSmad2 ProteinSmad3 ProteinSpecific Pathogen-Free OrganismsTh17 CellsT-Lymphocytes, Helper-InducerT-Lymphocytes, RegulatoryTransforming Growth Factor betaConceptsTh cell differentiationSevere experimental autoimmune encephalomyelitisGrowth factorExperimental autoimmune encephalomyelitisHelper T cell differentiationT helper cell differentiationCell differentiationT cell differentiationTGF-β signaling pathwaysTransforming Growth FactorHelper cell differentiationTGF-β stimulationCell receptor signalsAutoimmune encephalomyelitisTGF-β responseAbnormal accumulationImpaired phosphorylationReceptor signalsSignaling pathwaysMiceCellsKinase MEKK2DifferentiationWild-type cellsTregsmTOR Complex 2 Targets Akt for Proteasomal Degradation via Phosphorylation at the Hydrophobic Motif*
Wu YT, Ouyang W, Lazorchak AS, Liu D, Shen HM, Su B. mTOR Complex 2 Targets Akt for Proteasomal Degradation via Phosphorylation at the Hydrophobic Motif*. Journal Of Biological Chemistry 2011, 286: 14190-14198. PMID: 21321111, PMCID: PMC3077620, DOI: 10.1074/jbc.m111.219923.Peer-Reviewed Original ResearchConceptsAkt Ser-473 phosphorylationSer-473 phosphorylationAkt activationMotif phosphorylationHydrophobic motifProteasomal degradationHydrophobic motif phosphorylationLys-48-linked polyubiquitinationPhosphorylation-dependent ubiquitinationRapid proteasomal degradationProtein kinase AktRapamycin complex 2Protein life cycleDiverse human diseasesFull Akt activationActivity of AktNegative feedback regulationCellular stimuliKinase AktDependent phosphorylationProtein degradationTarget AktAkt activityHuman diseasesAkt protein
2007
MEKK3 is required for endothelium function but is not essential for tumor growth and angiogenesis
Deng Y, Yang J, McCarty M, Su B. MEKK3 is required for endothelium function but is not essential for tumor growth and angiogenesis. American Journal Of Physiology - Cell Physiology 2007, 293: c1404-c1411. PMID: 17687003, DOI: 10.1152/ajpcell.00058.2007.Peer-Reviewed Original ResearchMeSH KeywordsAngiopoietin-1AnimalsAortaApoptosisCell ProliferationEmbryo, MammalianEndocardiumEndothelial CellsEndothelium, VascularFemaleMAP Kinase Kinase Kinase 3MiceMice, Inbred StrainsMice, KnockoutMice, NudeMitogen-Activated Protein KinasesMyocardiumNeoplasms, ExperimentalNeoplastic Stem CellsNeovascularization, PathologicPhosphorylationReceptor, TIE-2Vascular Endothelial Growth Factor AConceptsEmbryonic angiogenesisProtein kinase kinase kinase 3Embryonic stem cell linesEarly embryonic developmentCell proliferationStem cell linesTumor angiogenesisTumor growthEmbryonic developmentEndothelial cellsKinase 3ERK5 activationMEKK3Endothelial cell proliferationAng1/Tie2Essential roleCell linesProduction of VEGFCritical roleEmbryosAngiogenesisFactor productionProliferationGrowthCells
2006
SIN1/MIP1 Maintains rictor-mTOR Complex Integrity and Regulates Akt Phosphorylation and Substrate Specificity
Jacinto E, Facchinetti V, Liu D, Soto N, Wei S, Jung SY, Huang Q, Qin J, Su B. SIN1/MIP1 Maintains rictor-mTOR Complex Integrity and Regulates Akt Phosphorylation and Substrate Specificity. Cell 2006, 127: 125-137. PMID: 16962653, DOI: 10.1016/j.cell.2006.08.033.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAnimalsCarrier ProteinsCells, CulturedFibroblastsForkhead Box Protein O1Forkhead Box Protein O3Forkhead Transcription FactorsGene SilencingHumansMiceMice, Inbred C57BLMice, KnockoutMultiprotein ComplexesPhosphoproteinsPhosphorylationProtein KinasesProteinsProto-Oncogene Proteins c-aktRapamycin-Insensitive Companion of mTOR ProteinRegulatory-Associated Protein of mTORSignal TransductionSubstrate SpecificityThreonineTOR Serine-Threonine KinasesTranscription FactorsConceptsAkt Ser473 phosphorylationAkt targetsSer473 phosphorylationAkt/PKB Ser473 phosphorylationPKB Ser473 phosphorylationRecent biochemical studiesTORC2 functionTORC1 functionHydrophobic motifProtein complexesRaptor-mTORMTOR functionActivation loopPhosphorylation sitesAkt functionSubstrate specificityComplex integrityS6KRegulatory mechanismsCell survivalPhosphorylationMammalian targetPhysiological importanceAkt phosphorylationBiochemical studies
2005
Identification of MEKK2/3 serine phosphorylation site targeted by the Toll‐like receptor and stress pathways
Zhang D, Facchinetti V, Wang X, Huang Q, Qin J, Su B. Identification of MEKK2/3 serine phosphorylation site targeted by the Toll‐like receptor and stress pathways. The EMBO Journal 2005, 25: 97-107. PMID: 16362041, PMCID: PMC1356356, DOI: 10.1038/sj.emboj.7600913.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsAntibodies, Phospho-SpecificCytokinesEnzyme ActivationInterleukin-6LigandsLipopolysaccharidesMAP Kinase Kinase Kinase 2MAP Kinase Kinase Kinase 3Molecular Sequence DataMutationPhosphoamino AcidsPhosphorylationProtein Kinase InhibitorsSerineTNF Receptor-Associated Factor 6Toll-Like Receptor 4Toll-Like ReceptorsConceptsPhosphorylation sitesSerine phosphorylationMitogen-activated protein kinase kinase kinase (MAP3K) familyMolecular mechanismsProtein kinase kinase kinase familyToll-like receptorsStress pathwaysRegulatory phosphorylation sitesSerine phosphorylation sitesCellular stress responseCellular stress pathwaysNovel molecular mechanismDifferent cellular responsesKey adaptor moleculeMEKK3 phosphorylationRegulatory serineKinase familyAdaptor moleculeStress responseCellular responsesK activationMAPK agonistsPhosphorylationMEKK2Pathway