1998
Critical Amino Acid Residues in Transmembrane Span 7 of the Serotonin Transporter Identified by Random Mutagenesis*
Penado K, Rudnick G, Stephan M. Critical Amino Acid Residues in Transmembrane Span 7 of the Serotonin Transporter Identified by Random Mutagenesis*. Journal Of Biological Chemistry 1998, 273: 28098-28106. PMID: 9774428, DOI: 10.1074/jbc.273.43.28098.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBiological TransportCarrier ProteinsMembrane GlycoproteinsMembrane Transport ProteinsModels, MolecularMolecular Sequence DataMutagenesisNerve Tissue ProteinsProtein ConformationRatsSerotoninSerotonin Plasma Membrane Transport ProteinsStructure-Activity RelationshipConceptsAmino acid residuesRandom mutagenesisAcid residuesTransport activityCritical amino acid residuesRat brain serotonin transporterCritical residuesTransport cycleWild typeNonconservative mutationsStructural predictionsTransporter functionLater stepsMutationsSerotonin transporterResiduesMutagenesisHydrophobic substitutionsTyr-385TransportersMutantsActivitySubstitutionNearby positions
1997
External Cysteine Residues in the Serotonin Transporter †
Chen J, Liu-Chen S, Rudnick G. External Cysteine Residues in the Serotonin Transporter †. Biochemistry 1997, 36: 1479-1486. PMID: 9063896, DOI: 10.1021/bi962256g.Peer-Reviewed Original ResearchConceptsTransport activityMTS reagentsCysteine residuesWild typeWild-type transporterSecond external loopTransient expression systemSurface expressionRat serotonin transporterExternal cysteine residuesHydropathy analysisMutant transportersType transporterDouble mutantExpression systemMethanethiosulfonate reagentsLigand bindingSerotonin transporterMutantsExtracellular loopHeLa cellsDisulfide bondsPartial activityTransportersSerine
1982
Bioenergetics of serotonin transport by membrane vesicles derived from platelet dense granules.
Fishkes H, Rudnick G. Bioenergetics of serotonin transport by membrane vesicles derived from platelet dense granules. Journal Of Biological Chemistry 1982, 257: 5671-5677. PMID: 7068613, DOI: 10.1016/s0021-9258(19)83830-9.Peer-Reviewed Original ResearchConceptsPlatelet dense granulesMembrane vesiclesSerotonin transport activitySoluble enzymatic activityPresence of ATPCarbonyl cyanide p-trifluoromethoxyphenylhydrazoneAddition of ATPOsmotic lysatesTransport activityCyanide p-trifluoromethoxyphenylhydrazoneEnzymatic activityDensity gradient centrifugationVesiclesSerotonin transportVesicle interiorDense granulesMembrane potentialP-trifluoromethoxyphenylhydrazoneGradient centrifugationATPAssay mediumAdenine nucleotidesBioenergeticsNucleotidesGranules
1978
Reconstitution of 5-hydroxytryptamine transport from cholate-disrupted platelet plasma membrane vesicles.
Rudnick G, Nelson P. Reconstitution of 5-hydroxytryptamine transport from cholate-disrupted platelet plasma membrane vesicles. Biochemistry 1978, 17: 5300-3. PMID: 728400, DOI: 10.1021/bi00617a033.Peer-Reviewed Original ResearchConceptsPlatelet plasma membrane vesiclesPlasma membrane vesiclesMembrane vesiclesTransport activityNative membrane vesiclesHigh molecular weight aggregatesInhibitor sensitivityVesicular structuresVesiclesIntact plateletsWeight aggregatesIonic requirementsSoybean phospholipidsProteoliposomesTransportersActivityPhospholipidsReconstitution