Jeongjoon Choi, PhD
Research ScientistCards
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Research
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2024
Rab6a enables BICD2/dynein-mediated trafficking of human papillomavirus from the trans-Golgi network during virus entry
Choi J, Speckhart K, Tsai B, DiMaio D. Rab6a enables BICD2/dynein-mediated trafficking of human papillomavirus from the trans-Golgi network during virus entry. MBio 2024, 15: e02811-24. PMID: 39431827, PMCID: PMC11559006, DOI: 10.1128/mbio.02811-24.Peer-Reviewed Original ResearchRab proteinsDNA virusesVirus entryHPV traffickingIntra-Golgi transportTrans-Golgi networkIntracellular vesicular transportMotor protein complexInfected cellsIntra-GolgiL2 capsid proteinRab GTPasesDynein adaptorsNon-enveloped DNA virusesRetrograde traffickingGolgi apparatusPotential targetProtein complexesVesicular transportRab6ADyneinTGNCapsid proteinRabCellular enzymesThe BICD2 dynein cargo adaptor binds to the HPV16 L2 capsid protein and promotes HPV infection
Speckhart K, Choi J, DiMaio D, Tsai B. The BICD2 dynein cargo adaptor binds to the HPV16 L2 capsid protein and promotes HPV infection. PLOS Pathogens 2024, 20: e1012289. PMID: 38829892, PMCID: PMC11230635, DOI: 10.1371/journal.ppat.1012289.Peer-Reviewed Original ResearchTrans Golgi networkL2 capsid proteinPromote infectionCapsid proteinIn vitro binding studiesDynein adaptorsGolgi networkCargo adaptorsBICD2 functionDynein motorsC-terminusDyneinSupport infectionMolecular basisBICD2EndosomesAdaptorProteinBinding studiesCell-basedVirusShort segmentHuman papillomavirusGolgiInfection
2023
Sequence-independent activity of a predicted long disordered segment of the human papillomavirus type 16 L2 capsid protein during virus entry
Oh C, Buckley P, Choi J, Hierro A, DiMaio D. Sequence-independent activity of a predicted long disordered segment of the human papillomavirus type 16 L2 capsid protein during virus entry. Proceedings Of The National Academy Of Sciences Of The United States Of America 2023, 120: e2307721120. PMID: 37819982, PMCID: PMC10589650, DOI: 10.1073/pnas.2307721120.Peer-Reviewed Original ResearchConceptsAmino acid sequenceAcid sequenceProtein segmentsVirus traffickingUnrelated cellular proteinsSequence-independent mannerIntracellular virus traffickingActivity of proteinsAmino acid segmentComplex biological functionsVirus entryTandem arraysProtein functionTrafficking factorsCellular proteinsEndosome membraneBiological functionsHPV16 pseudovirus infectionCellular factorsDiverse sequencesL2 capsid proteinsNoncanonical Rab9a action supports retromer-mediated endosomal exit of human papillomavirus during virus entry
Choi J, DiMaio D. Noncanonical Rab9a action supports retromer-mediated endosomal exit of human papillomavirus during virus entry. PLOS Pathogens 2023, 19: e1011648. PMID: 37703297, PMCID: PMC10519607, DOI: 10.1371/journal.ppat.1011648.Peer-Reviewed Original ResearchConceptsRetromer-mediated endosomeHPV entryGTP-bound formDominant negative Rab7Intracellular vesicular transportRetrograde transport pathwayVirus entryEndosomal exitRab GTPasesRab proteinsVesicle traffickingGolgi transportCellular proteinsVesicular transportProtein cargoKnockdown cellsIntracellular traffickingRab9AIncoming virusRab7EndosomesTraffickingTransport pathwaysProteinKey role
2020
Horizontally acquired regulatory gene activates ancestral regulatory system to promote Salmonella virulence
Choi J, Groisman EA. Horizontally acquired regulatory gene activates ancestral regulatory system to promote Salmonella virulence. Nucleic Acids Research 2020, 48: 10832-10847. PMID: 33045730, PMCID: PMC7641745, DOI: 10.1093/nar/gkaa813.Peer-Reviewed Original ResearchConceptsPhoP/PhoQAncestral regulatorNucleoid structuring protein H-NSProtein H-NSS. bongoriSalmonella enterica serovar TyphimuriumAncestral genomesH-NSTarget promotersEnterica serovar TyphimuriumRegulatory genesBacterial virulenceSalmonella virulencePromoter regionSsrBOpposite regulationGenesS. typhimuriumPhoQRegulatory systemSerovar TyphimuriumVirulenceTranscriptionPromoterRegulatorSalmonella expresses foreign genes during infection by degrading their silencer
Choi J, Groisman EA. Salmonella expresses foreign genes during infection by degrading their silencer. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 8074-8082. PMID: 32209674, PMCID: PMC7149492, DOI: 10.1073/pnas.1912808117.Peer-Reviewed Original ResearchConceptsForeign genesH-NSForeign DNAHeat-stable nucleoid-structuring (H-NS) proteinH-NS bindingNucleoid structuring proteinGram-negative bacterial speciesFacultative intracellular pathogenPhoP proteinLon proteaseProtease LonRegulatory sequencesVirulence regulatorGene silencingIntramacrophage survivalStructuring proteinBacterial speciesGenesInside macrophagesIntracellular pathogensSerovar TyphimuriumUncovered mechanismProteinVirulence genesDNA
2018
Elongation factor P controls translation of the mgtA gene encoding a Mg2+ transporter during Salmonella infection
Choi E, Nam D, Choi J, Park S, Lee J, Lee E. Elongation factor P controls translation of the mgtA gene encoding a Mg2+ transporter during Salmonella infection. MicrobiologyOpen 2018, 8: e00680. PMID: 29949242, PMCID: PMC6460261, DOI: 10.1002/mbo3.680.Peer-Reviewed Original ResearchConceptsMgtA geneProline codonsControl translationIntramacrophage survivalPathogen Salmonella enterica serovar TyphimuriumElongation factor PConsecutive proline codonsOpen reading frameSalmonella enterica serovar TyphimuriumEnterica serovar TyphimuriumTranslational controlReading frameSalmonella pathogenesisMRNA sequencesGenesCodonSerovar TyphimuriumRibosomesFactor PA protein that controls the onset of a Salmonella virulence program
Yeom J, Pontes MH, Choi J, Groisman EA. A protein that controls the onset of a Salmonella virulence program. The EMBO Journal 2018, 37: embj201796977. PMID: 29858228, PMCID: PMC6043847, DOI: 10.15252/embj.201796977.Peer-Reviewed Original ResearchConceptsVirulence programBacterial inner membraneMaster virulence regulatorC-terminal domainHost tissuesAnti-virulence factorMgtC proteinInner membraneGenetic programVirulence regulatorConstitutive promoterGene transcriptionIntramacrophage survivalSame mRNAAntibiotic toleranceATP synthesisPathogen survivalGenesMetabolic adaptationCytoplasmic pHSerovar TyphimuriumPathogen persistenceVirulence genesProteinMechanism of action
2017
Activation of master virulence regulator PhoP in acidic pH requires the Salmonella-specific protein UgtL
Choi J, Groisman EA. Activation of master virulence regulator PhoP in acidic pH requires the Salmonella-specific protein UgtL. Science Signaling 2017, 10 PMID: 28851823, PMCID: PMC5966036, DOI: 10.1126/scisignal.aan6284.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntimicrobial Cationic PeptidesBacterial ProteinsDisease Models, AnimalFemaleGene Expression Regulation, BacterialHydrogen-Ion ConcentrationMagnesiumMembrane ProteinsMiceMice, Inbred BALB CPeptidesPhosphorylationSalmonella InfectionsSalmonella typhimuriumSignal TransductionVirulenceConceptsPhoP activation
2016
Acidic pH sensing in the bacterial cytoplasm is required for Salmonella virulence
Choi J, Groisman EA. Acidic pH sensing in the bacterial cytoplasm is required for Salmonella virulence. Molecular Microbiology 2016, 101: 1024-1038. PMID: 27282333, PMCID: PMC5015592, DOI: 10.1111/mmi.13439.Peer-Reviewed Original Research
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