2015
Evolutionary Conservation of a GPCR-Independent Mechanism of Trimeric G Protein Activation
Coleman BD, Marivin A, Parag-Sharma K, DiGiacomo V, Kim S, Pepper JS, Casler J, Nguyen LT, Koelle MR, Garcia-Marcos M. Evolutionary Conservation of a GPCR-Independent Mechanism of Trimeric G Protein Activation. Molecular Biology And Evolution 2015, 33: 820-837. PMID: 26659249, PMCID: PMC4760084, DOI: 10.1093/molbev/msv336.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid MotifsAmino Acid SequenceAnimalsBiological EvolutionCaenorhabditis elegansCaenorhabditis elegans ProteinsEvolution, MolecularGene ExpressionGTP-Binding ProteinsGuanine Nucleotide Exchange FactorsModels, MolecularProtein BindingProtein ConformationProtein Interaction Domains and MotifsProtein MultimerizationReceptors, G-Protein-CoupledSignal TransductionConceptsGBA motifGEF activityG protein activationTrimeric G-protein signalingGuanine nucleotide exchange factor activityProtein activationG proteinsMammalian Gα subunitsG protein-mediated signalingMotif-containing proteinsGPCR-independent mechanismReceptor-independent G-protein activationExchange factor activityG protein signalingProtein-mediated signalingMammalian cell behaviorGOA-1Evolutionary conservationDivergent proteinsCaenorhabditis elegansBioinformatics searchGα subunitsMost invertebratesProtein signalingAccessory proteins
2009
RSBP-1 Is a Membrane-targeting Subunit Required by the Gαq-specific But Not the Gαo-specific R7 Regulator of G protein Signaling in Caenorhabditis elegans
Porter MY, Koelle MR. RSBP-1 Is a Membrane-targeting Subunit Required by the Gαq-specific But Not the Gαo-specific R7 Regulator of G protein Signaling in Caenorhabditis elegans. Molecular Biology Of The Cell 2009, 21: 232-243. PMID: 19923320, PMCID: PMC2808233, DOI: 10.1091/mbc.e09-07-0642.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsCaenorhabditis elegansCaenorhabditis elegans ProteinsCell MembraneGTP-Binding Protein alpha Subunits, Gi-GoGTP-Binding Protein alpha Subunits, Gq-G11GTP-Binding Protein RegulatorsImmunoprecipitationLocomotionMembrane ProteinsMolecular Sequence DataMusclesMutationNervous SystemOvulationProtein TransportRGS ProteinsSequence AlignmentSequence Homology, Amino AcidSignal TransductionSubcellular FractionsTransgenesConceptsR7 RGS proteinsRGS proteinsCaenorhabditis elegansEGL-10EAT-16G protein signaling (RGS) proteinsG proteinsMembrane-targeting sequenceGalpha GTPase activityC. elegans neuronsPhenocopies lossR7 regulatorMembrane associationRGS activityMembrane localizationProtein familyR7 familySignaling proteinsGTPase activityPlasma membraneGenetic studiesCultured cellsProteinR7BPElegans
2007
A Specific Subset of Transient Receptor Potential Vanilloid-Type Channel Subunits in Caenorhabditis elegans Endocrine Cells Function as Mixed Heteromers to Promote Neurotransmitter Release
Jose AM, Bany IA, Chase DL, Koelle MR. A Specific Subset of Transient Receptor Potential Vanilloid-Type Channel Subunits in Caenorhabditis elegans Endocrine Cells Function as Mixed Heteromers to Promote Neurotransmitter Release. Genetics 2007, 175: 93-105. PMID: 17057248, PMCID: PMC1774992, DOI: 10.1534/genetics.106.065516.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsAnimals, Genetically ModifiedBiological TransportCaenorhabditis elegansCaenorhabditis elegans ProteinsEndocrine GlandsFemaleIon ChannelsMolecular Sequence DataNerve Tissue ProteinsNeurosecretory SystemsOvipositionSequence Homology, Amino AcidTRPV Cation ChannelsConceptsOCR-2Neuroendocrine cellsEgg-laying defectsTRPV channel OSM-9Heteromeric channelsG protein GDominant negative mutantTransient receptor potential channelsEndocrine cell functionOSM-9Heteromeric partnerTRPV channelsSensory neuronsSingle knockoutDetectable functionOCR-1Premature eggsSensory transductionChannel subunitsDetectable roleSubunit compositionCell functionRelease of neurotransmittersNeurotransmitter releaseSubunit combinations
2005
Caenorhabditus elegans Arrestin Regulates Neural G Protein Signaling and Olfactory Adaptation and Recovery*
Palmitessa A, Hess HA, Bany IA, Kim YM, Koelle MR, Benovic JL. Caenorhabditus elegans Arrestin Regulates Neural G Protein Signaling and Olfactory Adaptation and Recovery*. Journal Of Biological Chemistry 2005, 280: 24649-24662. PMID: 15878875, DOI: 10.1074/jbc.m502637200.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAmino Acid SequenceAnimalsAnimals, Genetically ModifiedArrestinBenzaldehydesBlotting, NorthernCaenorhabditis elegansCell LineCells, CulturedChemotaxisClathrinCOS CellsDiacetylEndocytosisExonsGreen Fluorescent ProteinsGTP-Binding ProteinsHumansImmunohistochemistryModels, GeneticMolecular Sequence DataMutationNeuronsOdorantsOlfactory PathwaysPentanolsPhenotypePhylogenyProtein BindingProtein Structure, TertiarySequence Analysis, DNASignal TransductionTime FactorsConceptsARR-1Receptor endocytosisG protein signalingG protein-coupled receptorsOlfactory adaptationVolatile odorantsProtein-coupled receptorsPotential mechanistic basisEndocytic machineryCaenorhabditis elegansNull mutantsHSN neuronsProtein signalingReceptor kinaseAdaptation defectRecovery defectArrestin functionChemosensory neuronsEnvironmental cuesBind proteinsMechanistic basisVivo linkTransgenic expressionArrestinNormal chemotaxis
2004
Domains, Amino Acid Residues, and New Isoforms of Caenorhabditis elegans Diacylglycerol Kinase 1 (DGK-1) Important for Terminating Diacylglycerol Signaling in Vivo *
Jose AM, Koelle MR. Domains, Amino Acid Residues, and New Isoforms of Caenorhabditis elegans Diacylglycerol Kinase 1 (DGK-1) Important for Terminating Diacylglycerol Signaling in Vivo *. Journal Of Biological Chemistry 2004, 280: 2730-2736. PMID: 15563467, PMCID: PMC2048986, DOI: 10.1074/jbc.m409460200.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAlternative SplicingAmino Acid SequenceAnimalsBase SequenceBinding SitesCaenorhabditis elegansCell LineCodonCodon, TerminatorDiacylglycerol KinaseDiglyceridesExonsHumansInsectaModels, GeneticMolecular Sequence DataMutationPhosphorylationPlasmidsProtein IsoformsProtein Structure, TertiaryRecombinant ProteinsSequence Homology, Amino AcidSignal TransductionConceptsCysteine-rich domainAmino acid residuesDGK-1Pleckstrin homology domainKinase domainDiacylglycerol kinaseAmino acid substitutionsAcid residuesHomology domainATP-binding site mutationsStop codonSecond cysteine-rich domainPhysiological functionsAcid substitutionsThird cysteine-rich domainHuman diacylglycerol kinaseNovel splice formsSubstituted amino acid residuesDiacylglycerol signalingPremature stop codonCaenorhabditis elegansSplice formsStop codon mutantKey residuesNew isoform
2002
An N-terminal Region of Caenorhabditis elegans RGS Proteins EGL-10 and EAT-16 Directs Inhibition of Gαo VersusGαq Signaling*
Patikoglou GA, Koelle MR. An N-terminal Region of Caenorhabditis elegans RGS Proteins EGL-10 and EAT-16 Directs Inhibition of Gαo VersusGαq Signaling*. Journal Of Biological Chemistry 2002, 277: 47004-47013. PMID: 12354761, DOI: 10.1074/jbc.m208186200.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsAnimals, Genetically ModifiedBlotting, WesternCaenorhabditis elegansCaenorhabditis elegans ProteinsCell MembraneChromosomesEpitopesGTP-Binding Protein RegulatorsHelminth ProteinsHeterotrimeric GTP-Binding ProteinsImmunoblottingModels, BiologicalMolecular Sequence DataMutationPlasmidsPromoter Regions, GeneticProtein BindingProtein Structure, TertiaryProteinsRGS ProteinsSequence Homology, Amino AcidSignal TransductionTime FactorsTransgenesConceptsN-terminal regionEGL-10EGL-30GOA-1EAT-16G protein signaling (RGS) proteinsN-terminalGPB-2RGS domainRGS proteinsC. elegansGbeta subunitsMembrane localizationSignaling proteinsN-terminal fragmentC-terminal fragmentGTPase activityTarget specificityBiochemical analysisProteinTarget selectivityFragment complexChimerasFragmentsDirect inhibition
2000
Multiple RGS proteins alter neural G protein signaling to allow C. elegans to rapidly change behavior when fed
Dong M, Chase D, Patikoglou G, Koelle M. Multiple RGS proteins alter neural G protein signaling to allow C. elegans to rapidly change behavior when fed. Genes & Development 2000, 14: 2003-2014. PMID: 10950865, PMCID: PMC316861, DOI: 10.1101/gad.14.16.2003.Peer-Reviewed Original ResearchConceptsRGS proteinsEGL-10Egg-laying behaviorG proteinsRGS-2RGS-1Mammalian RGS proteinsMultiple RGS proteinsHeterotrimeric G proteinsG protein GTPase activityG protein signalingProtein GTPase activityGTPase activatorCaenorhabditis elegansC. elegansRGS genesDouble mutantProtein signalingGTPase activityProteinElegansBiological purposesRegulatorAppropriate behavioral responsesEggs
1999
Antagonism between Goα and Gqα in Caenorhabditis elegans: the RGS protein EAT-16 is necessary for Goα signaling and regulates Gqα activity
Hajdu-Cronin Y, Chen W, Patikoglou G, Koelle M, Sternberg P. Antagonism between Goα and Gqα in Caenorhabditis elegans: the RGS protein EAT-16 is necessary for Goα signaling and regulates Gqα activity. Genes & Development 1999, 13: 1780-1793. PMID: 10421631, PMCID: PMC316886, DOI: 10.1101/gad.13.14.1780.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBase SequenceCaenorhabditis elegansCaenorhabditis elegans ProteinsCOS CellsDNA PrimersGene Expression RegulationGenes, SuppressorGTP-Binding Protein RegulatorsGTP-Binding ProteinsHelminth ProteinsMolecular Sequence DataMutationSequence Homology, Amino AcidSignal TransductionConceptsEGL-30Cellular rolesEAT-16Double mutant analysisMajor cellular roleHeterotrimeric G proteinsG protein signalingMolecular genetic approachesCOS-7 cellsGOA-1Function mutantsCaenorhabditis elegansC. elegansDouble mutantProtein signalingGenetic approachesG proteinsSAG-1ElegansMutantsGenesGoαHyperactive phenotypeProteinMutations
1996
EGL-10 Regulates G Protein Signaling in the C. elegans Nervous System and Shares a Conserved Domain with Many Mammalian Proteins
Koelle M, Horvitz H. EGL-10 Regulates G Protein Signaling in the C. elegans Nervous System and Shares a Conserved Domain with Many Mammalian Proteins. Cell 1996, 84: 115-125. PMID: 8548815, DOI: 10.1016/s0092-8674(00)80998-8.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAmino Acid SequenceAnimalsBase SequenceCaenorhabditis elegansCaenorhabditis elegans ProteinsConserved SequenceFungal ProteinsGene DosageGenes, HelminthGTP-Binding ProteinsMammalsMolecular Sequence DataMusclesMutationNervous SystemNervous System Physiological PhenomenaOvumProteinsRatsRGS ProteinsSerotoninSignal TransductionYeastsConceptsEGL-10G proteinsNematode C. elegansG protein signalingMammalian genesGOA-1Mammalian proteinsC. elegansConserved domainProtein signalingNegative regulatorNeurotransmitter signalingProteinSignalingDose-dependent mannerPathwaySst2pElegansYeastGenesNervous systemDose-dependent fashionRegulatorCertain periodic behaviorsActivity