2024
Proteomic Profile of Circulating Extracellular Vesicles in the Brain after Δ9-Tetrahydrocannabinol Inhalation
Lallai V, Lam T, Garcia-Milian R, Chen Y, Fowler J, Manca L, Piomelli D, Williams K, Nairn A, Fowler C. Proteomic Profile of Circulating Extracellular Vesicles in the Brain after Δ9-Tetrahydrocannabinol Inhalation. Biomolecules 2024, 14: 1143. PMID: 39334909, PMCID: PMC11430348, DOI: 10.3390/biom14091143.Peer-Reviewed Original ResearchConceptsImmediate early gene c-fosChronic THC exposureEarly gene c-fosCannabinoid 1 receptorGene c-fosSex-specific mannerTHC exposurePsychoactive componentExtracellular vesiclesCentral signaling mechanismDrug effectsTHCChoroid plexus epithelial cellsFemale ratsC-fosPlexus epithelial cellsBrainCannabisRelease of EVsRegulate intercellular communicationCerebrospinal fluidEpithelial cellsIntercellular signaling mediatorsEV signalingIntercellular communication
2018
Striatin-1 is a B subunit of protein phosphatase PP2A that regulates dendritic arborization and spine development in striatal neurons
Li D, Musante V, Zhou W, Picciotto MR, Nairn AC. Striatin-1 is a B subunit of protein phosphatase PP2A that regulates dendritic arborization and spine development in striatal neurons. Journal Of Biological Chemistry 2018, 293: 11179-11194. PMID: 29802198, PMCID: PMC6052221, DOI: 10.1074/jbc.ra117.001519.Peer-Reviewed Original ResearchConceptsSerine/threonine phosphatase PP2AStriatin-interacting phosphataseRNA knockdown approachB subunitSTRIPAK complexPhosphatase PP2AProtein phosphataseMultiprotein complexesKnockdown approachStriatin familyMutant constructsStriatal neuronal culturesPP2ANeuronal developmentPrimary striatal neuronal culturesDendritic phenotypeKnockdown modelSynapse formationSubunitsSpine developmentSelective roleReduced expressionNeuron maturationNeuronal culturesStriatal neurons
2015
STEP61 is a substrate of the E3 ligase parkin and is upregulated in Parkinson’s disease
Kurup PK, Xu J, Videira RA, Ononenyi C, Baltazar G, Lombroso PJ, Nairn AC. STEP61 is a substrate of the E3 ligase parkin and is upregulated in Parkinson’s disease. Proceedings Of The National Academy Of Sciences Of The United States Of America 2015, 112: 1202-1207. PMID: 25583483, PMCID: PMC4313846, DOI: 10.1073/pnas.1417423112.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCorpus StriatumCyclic AMP Response Element-Binding ProteinDown-RegulationGene Expression Regulation, EnzymologicHEK293 CellsHumansMAP Kinase Signaling SystemMiceMice, KnockoutMitogen-Activated Protein Kinase 3MPTP PoisoningProtein Tyrosine Phosphatases, Non-ReceptorRatsRats, Sprague-DawleyUbiquitinationUbiquitin-Protein LigasesUp-RegulationConceptsE3 ubiquitin ligase ParkinSubstantia nigra pars compactaPathophysiology of PDProtein tyrosine phosphataseUbiquitin ligase ParkinSporadic Parkinson's diseaseE3 ligase ParkinRegulation of ParkinParkinson's diseaseTyrosine phosphataseParkin mutantsE3 ligaseProteasome systemDopaminergic neuronsDownstream targetsAutosomal recessive juvenile parkinsonismNovel substrateSTEP61ParkinCellular modelSTEP61 levelsSNc dopaminergic neuronsProtein levelsFunction contributesERK1/2
2005
A molecular switch for translational control in taste memory consolidation
Belelovsky K, Elkobi A, Kaphzan H, Nairn A, Rosenblum K. A molecular switch for translational control in taste memory consolidation. European Journal Of Neuroscience 2005, 22: 2560-2568. PMID: 16307598, DOI: 10.1111/j.1460-9568.2005.04428.x.Peer-Reviewed Original ResearchConceptsEukaryotic elongation factor 2Protein synthesisEEF2 phosphorylationKinase 2 activationElongation factor 2Translational regulationTranslation initiationTranslational controlS6K1 phosphorylationMolecular switchSwitch-like effectNeuronal proteinsPhosphorylationElongation rateRate-limiting stepFactor 2Taste memory consolidationSynaptoneurosomal fractionsExpressionTemporal patternsInitiation rateProtein
2001
Opposing Changes in Phosphorylation of Specific Sites in Synapsin I During Ca2+-Dependent Glutamate Release in Isolated Nerve Terminals
Jovanovic J, Sihra T, Nairn A, Hemmings H, Greengard P, Czernik A. Opposing Changes in Phosphorylation of Specific Sites in Synapsin I During Ca2+-Dependent Glutamate Release in Isolated Nerve Terminals. Journal Of Neuroscience 2001, 21: 7944-7953. PMID: 11588168, PMCID: PMC6763853, DOI: 10.1523/jneurosci.21-20-07944.2001.Peer-Reviewed Original ResearchConceptsDependent dephosphorylationProtein phosphatase 2AMultiple protein kinasesPhosphorylation site 1Protein phosphatase 2BSynapsin IPhosphatase 2APhosphorylation sitesPhosphatase 2BSynapsin functionProtein kinaseDependent phosphorylationSynapsin I phosphorylationDephosphorylation processNeuronal phosphoproteinSynapsin I.Synaptic vesiclesCalcineurin activityPhosphorylationI phosphorylationDephosphorylationNeurotransmitter releaseSpecific sitesExcellent substrateSite 1Changes in the phosphorylation of initiation factor eIF‐2α, elongation factor eEF‐2 and p70 S6 kinase after transient focal cerebral ischaemia in mice
Althausen S, Mengesdorf T, Mies G, Oláh L, Nairn A, Proud C, Paschen W. Changes in the phosphorylation of initiation factor eIF‐2α, elongation factor eEF‐2 and p70 S6 kinase after transient focal cerebral ischaemia in mice. Journal Of Neurochemistry 2001, 78: 779-787. PMID: 11520898, DOI: 10.1046/j.1471-4159.2001.00462.x.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCells, CulturedCerebral CortexCerebrovascular CirculationEnzyme InhibitorsEukaryotic Initiation Factor-2ImmunoblottingImmunohistochemistryIschemic Attack, TransientLaser-Doppler FlowmetryMiceMiddle Cerebral ArteryNeuronsPeptide Elongation Factor 2PhosphorylationProtein BiosynthesisRatsRats, WistarRibosomal Protein S6 KinasesThapsigarginConceptsIschaemia-induced changesTransient focal cerebral ischaemiaMiddle cerebral arteryFocal cerebral ischaemiaCerebral ischaemiaP70 S6 kinaseLeft middle cerebral arteryControl levelsTransient cerebral ischaemiaTransient MCA occlusionNeuronal cell injuryPrimary neuronal cell culturesTransient focal ischaemiaElongation factor eEF-2Endoplasmic reticulum calcium pumpEIF-2alpha phosphorylationER calcium homeostasisNeuronal cell culturesS6 kinaseProtein synthesisWestern blot analysisMCA occlusionMCA territoryMin occlusionCerebral arteryAngiotensin II regulates phosphorylation of translation elongation factor-2 in cardiac myocytes
Everett A, Stoops T, Nairn A, Brautigan D. Angiotensin II regulates phosphorylation of translation elongation factor-2 in cardiac myocytes. AJP Heart And Circulatory Physiology 2001, 281: h161-h167. PMID: 11406481, DOI: 10.1152/ajpheart.2001.281.1.h161.Peer-Reviewed Original ResearchMeSH KeywordsAngiotensin IIAnimalsCells, CulturedChromonesEnzyme InhibitorsMitogen-Activated Protein KinasesMorpholinesMyocardiumPeptide Elongation Factor 2Phosphoprotein PhosphatasesPhosphorylationProtein BiosynthesisProtein Phosphatase 2RatsRats, Sprague-DawleyReceptor, Angiotensin, Type 1Receptor, Angiotensin, Type 2Receptors, AngiotensinSignal TransductionSirolimusConceptsEukaryotic elongation factor 2Mitogen-activated protein kinaseElongation factor 2Protein phosphatase 2A inhibitor okadaic acidTranslation elongation factor 2Protein synthesisInhibitor okadaic acidFactor 2Rapamycin (mTOR) inhibitor rapamycinProtein translationDephosphorylated statePolypeptide elongationII-dependent increaseProtein kinaseEEF2 kinaseOkadaic acidDependent regulationInhibitor FK506MAPK activationPD 98059Cardiac myocytesDephosphorylationInhibitor rapamycinNeonatal cardiac myocytesRat neonatal cardiac myocytesARPP‐16/ARPP‐19: a highly conserved family of cAMP‐regulated phosphoproteins
Dulubova I, Horiuchi A, Snyder G, Girault J, Czernik A, Shao L, Ramabhadran R, Greengard P, Nairn A. ARPP‐16/ARPP‐19: a highly conserved family of cAMP‐regulated phosphoproteins. Journal Of Neurochemistry 2001, 77: 229-238. DOI: 10.1046/j.1471-4159.2001.00191.x.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsCHO CellsConserved SequenceCorpus StriatumCricetinaeCyclic AMPCyclic AMP-Dependent Protein KinasesHumansIn Vitro TechniquesMaleMiceMultigene FamilyOrgan SpecificityPhosphoproteinsPhosphorylationProtein IsoformsRatsRats, Sprague-DawleyReceptors, Dopamine D1Receptors, Dopamine D2Sequence Homology, Amino AcidConceptsProtein kinase AARPP-19ARPP-16Family of cAMPImportant cellular functionsActivation of PKAIsoform-specific antibodiesYeast genomeD. melanogasterC. elegansProtein familyCellular functionsNon-neuronal cellsSignal transductionConsensus sitesKinase ARelated proteinsΑ-endosulfinePhosphorylated formIntact cellsIntracellular messengerBi-directional regulationDopamine receptorsFamily membersPhosphorylationARPP-16/ARPP-19: a highly conserved family of cAMP-regulated phosphoproteins.
Dulubova I, Horiuchi A, Snyder G, Girault J, Czernik A, Shao L, Ramabhadran R, Greengard P, Nairn A. ARPP-16/ARPP-19: a highly conserved family of cAMP-regulated phosphoproteins. Journal Of Neurochemistry 2001, 77: 229-38. PMID: 11279279, DOI: 10.1046/j.1471-4159.2001.t01-1-00191.x.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsCHO CellsConserved SequenceCorpus StriatumCricetinaeCyclic AMPCyclic AMP-Dependent Protein KinasesHumansIn Vitro TechniquesMaleMiceMultigene FamilyOrgan SpecificityPhosphoproteinsPhosphorylationProtein IsoformsRatsRats, Sprague-DawleyReceptors, Dopamine D1Receptors, Dopamine D2Sequence Homology, Amino AcidConceptsProtein kinase AARPP-19ARPP-16Family of cAMPImportant cellular functionsActivation of PKAIsoform-specific antibodiesYeast genomeD. melanogasterC. elegansProtein familyCellular functionsNon-neuronal cellsSignal transductionConsensus sitesType dopamine receptorsKinase ARelated proteinsPhosphorylated formIntact cellsDopamine receptorsIntracellular messengerBi-directional regulationFamily membersPhosphorylationEffects of chronic exposure to cocaine are regulated by the neuronal protein Cdk5
Bibb J, Chen J, Taylor J, Svenningsson P, Nishi A, Snyder G, Yan Z, Sagawa Z, Ouimet C, Nairn A, Nestler E, Greengard P. Effects of chronic exposure to cocaine are regulated by the neuronal protein Cdk5. Nature 2001, 410: 376-380. PMID: 11268215, DOI: 10.1038/35066591.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrainCocaineCocaine-Related DisordersCorpus StriatumCyclin-Dependent Kinase 5Cyclin-Dependent KinasesDopamineDopamine and cAMP-Regulated Phosphoprotein 32Enzyme InhibitorsGene Expression Regulation, EnzymologicKinetinMaleMiceMice, TransgenicNerve Tissue ProteinsNeuronsOligonucleotide Array Sequence AnalysisPhosphoproteinsPhosphorylationProto-Oncogene Proteins c-fosPsychomotor PerformancePurinesRatsRats, Sprague-DawleyReceptors, Dopamine D1RoscovitineSignal TransductionConceptsTranscription factorsSuch transcription factorsDownstream target genesCyclin-dependent kinase 5DNA array analysisTarget genesGene expressionCocaine administrationKinase 5Inducible transgenic miceChronic exposureCdk5 inhibitorMessenger RNACocaine addictionArray analysisDopamine-mediated neurotransmissionDopamine-containing nerve terminalsMedium spiny neuronsD1 dopamine receptorsChronic cocaine administrationOverexpression of ΔFosBProteinTransgenic miceAdaptive changesSpiny neuronsAuto‐inhibition of Ca2+/calmodulin‐dependent protein kinase II by its ATP‐binding domain
Lengyel I, Nairn A, McCluskey A, Tóth G, Penke B, Rostas J. Auto‐inhibition of Ca2+/calmodulin‐dependent protein kinase II by its ATP‐binding domain. Journal Of Neurochemistry 2001, 76: 1066-1072. PMID: 11181826, DOI: 10.1046/j.1471-4159.2001.00139.x.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsBinding SitesCalcium-Calmodulin-Dependent Protein Kinase Type 1Calcium-Calmodulin-Dependent Protein Kinase Type 2Calcium-Calmodulin-Dependent Protein Kinase Type 4Calcium-Calmodulin-Dependent Protein KinasesCyclic AMP-Dependent Protein KinasesDose-Response Relationship, DrugEnzyme ActivationEnzyme InhibitorsPeptide FragmentsPeptidesProtein Structure, TertiaryRatsSubstrate SpecificityConceptsATP-binding domainDependent protein kinase IIProtein kinase IIProtein kinaseCaMPK-IIKinase IICAMP-dependent protein kinaseDependent protein kinaseSubstitution of phenylalaninePhysiological processesKey enzymeAutocamtide-2Position 25Phenylalanine 25Molecular interactionsKinasePeptide fragmentsDependent activityIndependent activityATPEnzymeCrucial roleIntramolecular interactionsDomainInhibitionPhosphorylation of Protein Phosphatase Inhibitor-1 by Cdk5*
Bibb J, Nishi A, O'Callaghan J, Ule J, Lan M, Snyder G, Horiuchi A, Saito T, Hisanaga S, Czernik A, Nairn A, Greengard P. Phosphorylation of Protein Phosphatase Inhibitor-1 by Cdk5*. Journal Of Biological Chemistry 2001, 276: 14490-14497. PMID: 11278334, DOI: 10.1074/jbc.m007197200.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBinding SitesBrainCalcineurinCarrier ProteinsCDC2 Protein KinaseCyclic AMPCyclic AMP-Dependent Protein KinasesCyclin-Dependent Kinase 5Cyclin-Dependent KinasesGlutamic AcidIntracellular Signaling Peptides and ProteinsKineticsMiceMice, Inbred C57BLMutagenesis, Site-DirectedN-MethylaspartatePhosphoprotein PhosphatasesPhosphorylationProlineProtein Phosphatase 1RabbitsRatsRecombinant ProteinsRNA-Binding ProteinsSerineTime FactorsConceptsProtein phosphatase inhibitor-1Protein phosphatase 1Phosphatase inhibitor-1Ser-67Protein kinasePhosphatase 1CAMP-dependent protein kinase resultsSelective protein kinase inhibitorsCAMP-dependent protein kinaseProtein phosphatase 2AProline-directed kinasesMitogen-activated protein kinaseInhibitor-1Protein kinase resultsSignal transduction eventsPhosphorylation state-specific antibodiesCAMP-dependent protein kinase activationState of phosphorylationProtein kinase inhibitorsProtein kinase activationPhosphatase 2AThr-35Protein phosphatasePhosphorylation sitesGlutamate-dependent regulation
2000
Drugs of abuse modulate the phosphorylation of ARPP-21, a cyclic AMP-regulated phosphoprotein enriched in the basal ganglia
Caporaso G, Bibb J, Snyder G, Valle C, Rakhilin S, Fienberg A, Hemmings H, Nairn A, Greengard P. Drugs of abuse modulate the phosphorylation of ARPP-21, a cyclic AMP-regulated phosphoprotein enriched in the basal ganglia. Neuropharmacology 2000, 39: 1637-1644. PMID: 10854908, DOI: 10.1016/s0028-3908(99)00230-0.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibodies, MonoclonalBasal GangliaCattleCocaineCorpus StriatumCyclosporineDopamine and cAMP-Regulated Phosphoprotein 32Dopamine Uptake InhibitorsEnzyme InhibitorsIllicit DrugsMarine ToxinsMethamphetamineMiceMice, Inbred C57BLMice, TransgenicNerve Tissue ProteinsOkadaic AcidOxazolesPhosphoproteinsPhosphorylationRatsThe Dopamine/D1 Receptor Mediates the Phosphorylation and Inactivation of the Protein Tyrosine Phosphatase STEP via a PKA-Dependent Pathway
Paul S, Snyder G, Yokakura H, Picciotto M, Nairn A, Lombroso P. The Dopamine/D1 Receptor Mediates the Phosphorylation and Inactivation of the Protein Tyrosine Phosphatase STEP via a PKA-Dependent Pathway. Journal Of Neuroscience 2000, 20: 5630-5638. PMID: 10908600, PMCID: PMC6772528, DOI: 10.1523/jneurosci.20-15-05630.2000.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsCatalytic DomainCorpus StriatumCyclic AMP-Dependent Protein KinasesEnzyme ActivationIn Vitro TechniquesMaleMolecular Sequence DataNeuronsPhosphoproteinsPhosphorus RadioisotopesPhosphorylationProtein Tyrosine PhosphatasesProtein Tyrosine Phosphatases, Non-ReceptorRatsRats, Sprague-DawleyReceptors, Dopamine D1Signal TransductionConceptsProtein tyrosine phosphatase familyCAMP-dependent protein kinaseTryptic phosphopeptide mappingPotential phosphorylation sitesUnique N-terminalProtein-protein interactionsMembrane-associated proteinsRole of phosphorylationTyrosine phosphatase familyAmino acid sequenceSite-directed mutagenesisAmino acid sequencingPKA-dependent pathwayTyrosine phosphatase STEPPhosphatase familyPhosphopeptide mappingPhosphorylation sitesAlternative splicingSubcellular compartmentsProtein kinaseTerminal domainEquivalent residuesCytosolic proteinsSpecific residuesAcid sequenceNMDA receptor-mediated control of protein synthesis at developing synapses
Scheetz A, Nairn A, Constantine-Paton M. NMDA receptor-mediated control of protein synthesis at developing synapses. Nature Neuroscience 2000, 3: 211-216. PMID: 10700251, DOI: 10.1038/72915.Peer-Reviewed Original ResearchMeSH Keywords2-Amino-5-phosphonovalerateAnimalsCalcium-Calmodulin-Dependent Protein Kinase Type 2Calcium-Calmodulin-Dependent Protein KinasesCycloheximideElectrophoresis, Gel, Two-DimensionalGlutamic AcidIsoelectric PointMolecular WeightN-MethylaspartatePeptide Elongation Factor 2PhosphorylationPrecipitin TestsProtein BiosynthesisProteinsRatsReceptors, N-Methyl-D-AspartateRetinal Ganglion CellsSuperior ColliculiSynapsesSynaptosomesTime FactorsConceptsNMDAR activationReceptor activationN-methyl-D-aspartate (NMDA) receptor activationActivity-dependent synaptic changesEukaryotic elongation factor 2Receptor-mediated controlSynaptic protein synthesisEEF2 phosphorylationProtein synthesisSuperior colliculiYoung ratsDependent kinase IISynaptic changesLow dosesTotal protein synthesisII synthesisFactor 2Overall protein synthesisActivationElongation factor 2Kinase IIPhosphorylationProstaglandin E2 interaction with AVP: effects on AQP2 phosphorylation and distribution
Zelenina M, Christensen B, Palmér J, Nairn A, Nielsen S, Aperia A. Prostaglandin E2 interaction with AVP: effects on AQP2 phosphorylation and distribution. American Journal Of Physiology. Renal Physiology 2000, 278: f388-f394. PMID: 10710543, DOI: 10.1152/ajprenal.2000.278.3.f388.Peer-Reviewed Original ResearchConceptsTranslocation of AQP2AQP2 phosphorylationPlasma membraneAquaporin-2Subcellular distributionPlasma membrane-enriched fractionVesicle-enriched fractionsMembrane-enriched fractionDuct water permeabilityConsensus sitesIntracellular vesiclesPhosphorylationDifferential centrifugation techniqueAction of arginineRenal inner medullaE2 interactionRat renal inner medullaTranslocationInner medullaDose-dependent mannerWater channelsMembraneDephosphorylationTraffickingProtein
1999
The expression of Ca2+/calmodulin-dependent protein kinase I in rat retina is regulated by light stimulation
Tsumura T, Murata A, Yamaguchi F, Sugimoto K, Hasegawa E, Hatase O, Nairn A, Tokuda M. The expression of Ca2+/calmodulin-dependent protein kinase I in rat retina is regulated by light stimulation. Vision Research 1999, 39: 3165-3173. PMID: 10615488, DOI: 10.1016/s0042-6989(99)00063-2.Peer-Reviewed Original ResearchRegulation of Neurabin I Interaction with Protein Phosphatase 1 by Phosphorylation †
McAvoy T, Allen P, Obaishi H, Nakanishi H, Takai Y, Greengard P, Nairn A, Hemmings H. Regulation of Neurabin I Interaction with Protein Phosphatase 1 by Phosphorylation †. Biochemistry 1999, 38: 12943-12949. PMID: 10504266, DOI: 10.1021/bi991227d.Peer-Reviewed Original ResearchConceptsProtein phosphatase 1Neurabin IPP1 activityPhosphatase 1Two-hybrid interaction analysisActin-binding proteinsCo-immunoprecipitation experimentsMimic phosphorylationSerine 461Phosphorylated residuesGlutathione S-transferaseOverlay assaysFusion proteinSignaling mechanismGamma isoformsCAMP pathwayPhosphorylationS-transferaseProteinTryptic digestPKARegulationHPLC-MS analysisInteraction analysisS461Role of Phosphorylation of Alzheimer’s Amyloid Precursor Protein during Neuronal Differentiation
Ando K, Oishi M, Takeda S, Iijima K, Isohara T, Nairn A, Kirino Y, Greengard P, Suzuki T. Role of Phosphorylation of Alzheimer’s Amyloid Precursor Protein during Neuronal Differentiation. Journal Of Neuroscience 1999, 19: 4421-4427. PMID: 10341243, PMCID: PMC6782598, DOI: 10.1523/jneurosci.19-11-04421.1999.Peer-Reviewed Original ResearchModulation of GT-1 DNA-binding activity by calcium-dependent phosphorylation
Maréchal E, Hiratsuka K, Delgado J, Nairn A, Qin J, Chait B, Chua N. Modulation of GT-1 DNA-binding activity by calcium-dependent phosphorylation. Plant Molecular Biology 1999, 40: 373-386. PMID: 10437822, DOI: 10.1023/a:1006131330930.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsArabidopsisBase SequenceBinding SitesCalciumCalcium-Calmodulin-Dependent Protein Kinase Type 2Calcium-Calmodulin-Dependent Protein KinasesDNA PrimersDNA-Binding ProteinsIn Vitro TechniquesMolecular Sequence DataNuclear ProteinsPhosphorylationPlants, ToxicRatsRecombinant ProteinsSequence Homology, Amino AcidSubstrate SpecificityTranscription FactorsConceptsDNA-binding activityCalcium-dependent phosphorylationGene expressionMolecular switchGT-1Analysis of mutantsDNA-binding proteinsLight-grown plantsPost-translational modificationsCalf intestine phosphataseCalcium/calmodulin kinasePhosphorylatable residuesCasein kinaseGene activationMass spectrometry analysisPromoter sequencesDNA bindingKinase activityBoxIICalmodulin kinasePhosphorylationHGT-1Novo synthesisDephosphorylationSpectrometry analysis