2001
The distal convoluted tubule of rabbit kidney does not express a functional sodium channel
Velázquez H, Silva T, Andújar E, Desir G, Ellison D, Greger R. The distal convoluted tubule of rabbit kidney does not express a functional sodium channel. American Journal Of Physiology. Renal Physiology 2001, 280: f530-f539. PMID: 11181416, DOI: 10.1152/ajprenal.2001.280.3.f530.Peer-Reviewed Original ResearchAnimalsBlotting, NorthernCalcium-Binding ProteinsCloning, MolecularEndosomal Sorting Complexes Required for TransportEpithelial Sodium ChannelsIn Vitro TechniquesKidneyKidney Tubules, DistalLigasesMolecular Sequence DataNedd4 Ubiquitin Protein LigasesNephronsPerfusionRabbitsReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSodium ChannelsTissue DistributionUbiquitin-Protein Ligases
2000
KCNA10: a novel ion channel functionally related to both voltage-gated potassium and CNG cation channels
Lang R, Lee G, Liu W, Tian S, Rafi H, Orias M, Segal A, Desir G. KCNA10: a novel ion channel functionally related to both voltage-gated potassium and CNG cation channels. American Journal Of Physiology. Renal Physiology 2000, 278: f1013-f1021. PMID: 10836990, DOI: 10.1152/ajprenal.2000.278.6.f1013.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBase SequenceCyclic Nucleotide-Gated Cation ChannelsDNA PrimersFemaleHumansIn Vitro TechniquesIon Channel GatingIon ChannelsMembrane PotentialsOocytesPatch-Clamp TechniquesPotassium Channel BlockersPotassium ChannelsPotassium Channels, Voltage-GatedRabbitsRecombinant ProteinsSecond Messenger SystemsShaker Superfamily of Potassium ChannelsXenopus laevisClose Association of the N Terminus of Kv1.3 with the Pore Region*
Yao X, Liu W, Tian S, Rafi H, Segal A, Desir G. Close Association of the N Terminus of Kv1.3 with the Pore Region*. Journal Of Biological Chemistry 2000, 275: 10859-10863. PMID: 10753881, DOI: 10.1074/jbc.275.15.10859.Peer-Reviewed Original ResearchConceptsN-terminusPore regionSteady-state protein levelsLarge single-channel conductanceVoltage-gated potassium channelsWild-type channelsShaker proteinCertain amino acidsChannel assemblyWild typeChannel proteinsChannel functionAmino acidsSingle-channel conductancePore blockersSpeed of inactivationTerminusProtein levelsDomain leadPore selectivityPotassium channelsProteinType channelsKinetic propertiesChannel conductance
1999
The T0 Domain of Rabbit KV1.3 Regulates Steady State Channel Protein Level
Segal A, Yao X, Desir G. The T0 Domain of Rabbit KV1.3 Regulates Steady State Channel Protein Level. Biochemical And Biophysical Research Communications 1999, 254: 54-64. PMID: 9920732, DOI: 10.1006/bbrc.1998.9801.Peer-Reviewed Original ResearchConceptsN-terminal regulatory regionVoltage-gated potassium channelsWild-type channelsRegulatory regionsPlasma membraneAmino terminusChannel assemblyChannel proteinsRecognition domainSingle-channel conductanceKv channelsChannel protein levelsProtein levelsProtein densityPotassium channelsOpen probabilityType channelsChannel conductanceKv1.3Fast inactivationDomainMembraneTerminusProteinInactivation
1998
Characterization of a Regulatory Region in the N-Terminus of Rabbit Kv1.3
Yao X, Huang Y, Kwan HY, Chan P, Segal AS, Desir G. Characterization of a Regulatory Region in the N-Terminus of Rabbit Kv1.3. Biochemical And Biophysical Research Communications 1998, 249: 492-498. PMID: 9712724, DOI: 10.1006/bbrc.1998.9122.Peer-Reviewed Original ResearchAmino Acid SequenceAnimalsChemical PhenomenaChemistry, PhysicalDynaminsElectric ConductivityEndocytosisFemaleGene DeletionGene ExpressionGTP PhosphohydrolasesKv1.3 Potassium ChannelMolecular Sequence DataMutagenesisOocytesPeptide FragmentsPotassium ChannelsPotassium Channels, Voltage-GatedProtein Sorting SignalsRabbitsRNA, ComplementaryStructure-Activity RelationshipTransfectionXenopus laevisRabbit distal convoluted tubule coexpresses NaCl cotransporter and 11β-hydroxysteroid dehydrogenase II mRNA
Velázquez H, Náray-Fejes-Tóth A, Silva T, Andújar E, Reilly RF, Desir GV, Ellison DH. Rabbit distal convoluted tubule coexpresses NaCl cotransporter and 11β-hydroxysteroid dehydrogenase II mRNA. Kidney International 1998, 54: 464-472. PMID: 9690213, DOI: 10.1046/j.1523-1755.1998.00036.x.Peer-Reviewed Original ResearchConceptsProximal tubulesNaCl cotransporterNephron segmentsDissected nephron segmentsTarget tissuesAction of aldosteroneAldosterone target tissuesSame nephron segmentsPolymerase chain reaction techniqueReverse transcriptase/polymerase chain reaction techniqueChain reaction techniqueDietary NaClDistal nephronBeta-HSDCCD samplesMRNA expressionNaCl cotransportRecent evidenceSimilar extentAldosteroneCotransporterHigh ratePrincipal targetTubulesTissue
1997
Cloning and localization of a double-pore K channel, KCNK1: exclusive expression in distal nephron segments
Orias M, Velázquez H, Tung F, Lee G, Desir G. Cloning and localization of a double-pore K channel, KCNK1: exclusive expression in distal nephron segments. American Journal Of Physiology 1997, 273: f663-f666. PMID: 9362344, DOI: 10.1152/ajprenal.1997.273.4.f663.Peer-Reviewed Original ResearchConceptsThick ascending limbAscending limbK channelsCortical thick ascending limbMedullary thick ascending limbDistal nephron segmentsReverse transcription-polymerase chain reactionDistal convoluted tubuleTranscription-polymerase chain reactionDistal tubulesConvoluted tubulesProximal tubulesNephron segmentsHigh expressionNephron segment localizationK homeostasisChain reactionHuman kidney cDNATubulesSegment localizationExclusive expressionKCNK1LimbPore regionKidney cDNA
1996
Genomic structure and regulation of Kcn1, a cGMP-gated potassium channel
Yao X, Liu Y, Tung F, Desir GV. Genomic structure and regulation of Kcn1, a cGMP-gated potassium channel. American Journal Of Physiology 1996, 271: f37-f41. PMID: 8760241, DOI: 10.1152/ajprenal.1996.271.1.f37.Peer-Reviewed Original ResearchConceptsCis-regulatory elementsPromoter regionEnhancer elementsNovel potassium channel geneMajor transcription initiation siteTypical TATA boxTranscription initiation sitePhorbol esterPotassium channel genesLuciferase reporter constructsPotassium channelsGenomic structurePorcine kidney cell lineDeletion analysisRabbit geneTATA boxAcid proteinGene transcriptionKidney cell lineReporter constructsChannel genesSequence analysisPrimer extensionInitiation siteNorthern blotMolecular cloning of a glibenclamide-sensitive, voltage-gated potassium channel expressed in rabbit kidney.
Yao X, Chang AY, Boulpaep EL, Segal AS, Desir GV. Molecular cloning of a glibenclamide-sensitive, voltage-gated potassium channel expressed in rabbit kidney. Journal Of Clinical Investigation 1996, 97: 2525-2533. PMID: 8647945, PMCID: PMC507338, DOI: 10.1172/jci118700.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBase SequenceBrainCloning, MolecularDNA PrimersFemaleGenetic VariationGenomic LibraryGlyburideHumansKidney MedullaKv1.3 Potassium ChannelMiceModels, BiologicalMolecular Sequence DataOocytesPancreatitis-Associated ProteinsPhylogenyPolymerase Chain ReactionPotassium ChannelsPotassium Channels, Voltage-GatedRabbitsRecombinant ProteinsSequence Homology, Amino AcidXenopus laevisConceptsVoltage-gated potassium channelsMolecular cloningFunctional expressionShaker-like potassium channelsPotassium channelsShaker geneGRB-PAP1Novel memberAmino terminusMolecular evidenceShaker channelsAmino acidsXenopus oocytesRabbit kidneyRenal potassium transportCloningGenesPotassium transportChannel clonesFirst reportRabbit brainPotassium conductanceFamilyExpressionKidney
1995
Primary structure and functional expression of a cGMP-gated potassium channel.
Yao X, Segal AS, Welling P, Zhang X, McNicholas CM, Engel D, Boulpaep EL, Desir GV. Primary structure and functional expression of a cGMP-gated potassium channel. Proceedings Of The National Academy Of Sciences Of The United States Of America 1995, 92: 11711-11715. PMID: 8524834, PMCID: PMC40472, DOI: 10.1073/pnas.92.25.11711.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBase SequenceCloning, MolecularCyclic GMPElectric ConductivityGene LibraryIon Channel GatingMolecular Sequence DataOocytesPhylogenyPotassiumPotassium ChannelsProtein BiosynthesisProtein ConformationRabbitsRNA, MessengerSequence Homology, Amino AcidTissue DistributionXenopusConceptsDeduced amino acid sequenceChannel protein phosphorylationCysteine-rich regionAmino acid sequenceNorthern blot analysisPotassium channel activityProtein phosphorylationAcid sequenceGene expressionPrimary structureFunctional expressionK channelsIon channelsChannel activityBlot analysisCyclic nucleotidesShaker K channelsPotassium channelsEffects of substancesKCN1Intracellular cGMPCGMPNitric oxideExpressionImportant role
1993
Identification of a novel K-channel gene (KC22) that is highly expressed in distal tubule of rabbit kidney
Desir GV, Velazquez H. Identification of a novel K-channel gene (KC22) that is highly expressed in distal tubule of rabbit kidney. American Journal Of Physiology 1993, 264: f128-f133. PMID: 7679255, DOI: 10.1152/ajprenal.1993.264.1.f128.Peer-Reviewed Original ResearchConceptsPolymerase chain reactionRabbit kidneyKidney cortexWhole kidney cortexShaker gene familyDistal tubule cellsVoltage-gated K channelsRenal tissueDistal tubulesTubule cellsRibonuclease protectionPrimary culturesKidneyChain reactionExpression levelsK channelsCortexTubulesPartial-length sequencesAbundant isoformIsoformsKidney cDNAK channel genesImmunocytochemical characterization of the high-affinity thiazide diuretic receptor in rabbit renal cortex
Ellison DH, Biemesderfer D, Morrisey J, Lauring J, Desir GV. Immunocytochemical characterization of the high-affinity thiazide diuretic receptor in rabbit renal cortex. American Journal Of Physiology 1993, 264: f141-f148. PMID: 8430824, DOI: 10.1152/ajprenal.1993.264.1.f141.Peer-Reviewed Original ResearchConceptsThiazide diuretic receptorRenal distal tubulesDistal tubulesUrinary NaCl excretionRenal cortical membranesThick ascending limbRabbit kidney cortexApical membraneThiazide diureticsRenal cortexRabbit renal cortexCortical membranesProximal tubulesAscending limbSubpopulation of cellsNaCl excretionThiazide receptorKidney cortexIntense stainingWestern blotMonoclonal antibodiesRabbit kidneyImmunocytochemical characterizationPrincipal cellsReceptors
1992
Inhibition of Ca-activated K+ channels from renal microvillus membrane vesicles by amiloride analogs
Zweifach A, Desir G, Aronson P, Giebisch G. Inhibition of Ca-activated K+ channels from renal microvillus membrane vesicles by amiloride analogs. The Journal Of Membrane Biology 1992, 128: 115-122. PMID: 1501239, DOI: 10.1007/bf00231884.Peer-Reviewed Original ResearchIsolation of putative voltage-gated epithelial K-channel isoforms from rabbit kidney and LLC-PK1 cells
Desir GV, Hamlin HA, Puente E, Reilly RF, Hildebrandt F, Igarashi P. Isolation of putative voltage-gated epithelial K-channel isoforms from rabbit kidney and LLC-PK1 cells. American Journal Of Physiology 1992, 262: f151-f157. PMID: 1733291, DOI: 10.1152/ajprenal.1992.262.1.f151.Peer-Reviewed Original ResearchConceptsDeduced amino acid sequenceAmino acid sequenceAcid sequenceVoltage-gated K channelsRabbit genomic DNAPutative transmembrane segmentsShaker-like genesPutative voltage sensorShaker gene familyVoltage-gated potassium channelsGene familyShaker proteinRenal epithelial cellsTransmembrane segmentsSequence similarityRabbit cDNAEpithelial cell lineSouthern analysisProtein sequencesLLC-PK1 cellsDifferent genesGenomic DNAKidney cDNACDNAS4 segment
1991
Solubilization and partial purification of the thiazide diuretic receptor from rabbit renal cortex
Ellison D, Morrisey J, Desir G. Solubilization and partial purification of the thiazide diuretic receptor from rabbit renal cortex. Biochimica Et Biophysica Acta 1991, 1069: 241-249. PMID: 1932064, DOI: 10.1016/0005-2736(91)90131-q.Peer-Reviewed Original ResearchConceptsHigh-affinity receptorRenal cortexCortical homogenatesDistal tubulesHigh-performance liquid chromatographyDistal tubule fragmentsRenal cortical microsomesRenal distal tubulesThiazide diuretic receptorRenal cortical membranesExclusion high performance liquid chromatographyRat renal cortexRenal cortical homogenatesCortical microsomesRabbit renal cortexReceptor densityCortical membranesSize-exclusion high-performance liquid chromatographyRabbit receptorThiazide receptorCl- transport pathwaysPercoll gradient centrifugationDiuretic drugsTubule fragmentsReceptorsReconstitution and partial purification of an amiloride-sensitive, cation channel from rabbit kidney
Desir G. Reconstitution and partial purification of an amiloride-sensitive, cation channel from rabbit kidney. Biochimica Et Biophysica Acta 1991, 1067: 38-42. PMID: 1868102, DOI: 10.1016/0005-2736(91)90023-2.Peer-Reviewed Original ResearchConceptsBrush border membrane vesiclesCation channelsMembrane vesicle proteinsChannel activityAmiloride-sensitive cation channelVesicle proteinsBorder membrane vesiclesMembrane vesiclesRabbit brush border membrane vesiclesProteoliposomesNative brush border membranesBrush border membraneSensitive cation channelPotassium channelsProteinPartial purificationAcridine orangeRenal brush-border membrane vesiclesBorder membraneDiethylthiadicarbocyanine iodideReconstitutionRabbit kidneyA Ca-activated K channel from rabbit renal brush-border membrane vesicles in planar lipid bilayers
Zweifach A, Desir GV, Aronson PS, Giebisch GH. A Ca-activated K channel from rabbit renal brush-border membrane vesicles in planar lipid bilayers. American Journal Of Physiology 1991, 261: f187-f196. PMID: 1713419, DOI: 10.1152/ajprenal.1991.261.1.f187.Peer-Reviewed Original ResearchHigh affinity binding of amiloride analogs at an internal site in renal microvillus membrane vesicles
Desir GV, Cragoe EJ, Aronson PS. High affinity binding of amiloride analogs at an internal site in renal microvillus membrane vesicles. Journal Of Biological Chemistry 1991, 266: 2267-2271. PMID: 1846621, DOI: 10.1016/s0021-9258(18)52238-9.Peer-Reviewed Original ResearchConceptsMembrane vesiclesMicrovillus membrane vesiclesRenal microvillus membrane vesiclesSimilar rank order potencyBinding sitesInternal sitesHigh-affinity inhibitorsMembrane localizationInternal binding siteAmiloride analoguesPlasma membraneRank order potencyHigh-affinity bindingAffinity inhibitorsHigh affinity-binding siteVesiclesBasolateral membrane vesiclesOrder potency