2017
Genome mining unearths a hybrid nonribosomal peptide synthetase-like-pteridine synthase biosynthetic gene cluster
Park HB, Perez CE, Barber KW, Rinehart J, Crawford JM. Genome mining unearths a hybrid nonribosomal peptide synthetase-like-pteridine synthase biosynthetic gene cluster. ELife 2017, 6: e25229. PMID: 28431213, PMCID: PMC5384830, DOI: 10.7554/elife.25229.Peer-Reviewed Original ResearchMeSH KeywordsBiosynthetic PathwaysComputational BiologyGene DeletionMagnetic Resonance SpectroscopyMultigene FamilyPeptide SynthasesPhotorhabdusProteomicsPteridinesConceptsBiosynthetic gene clusterNonribosomal peptide synthetaseGene clusterPeptide synthetaseGenome synteny analysisHybrid nonribosomal peptide synthetaseSecondary metabolic enzymesQuantitative proteomic analysisExtensive gene deletionsRedox-active cofactorsSynteny analysisMutualistic roleGenome miningBiosynthetic machineryPhenotypic variationBiosynthetic potentialNonribosomal peptidesProteomic analysisQuorum sensingGenetic lociMetabolic enzymesAcyl side chainPhenotypic variantsGene deletionDistinct classesStilbene epoxidation and detoxification in a Photorhabdus luminescens-nematode symbiosis
Park HB, Sampathkumar P, Perez CE, Lee JH, Tran J, Bonanno JB, Hallem EA, Almo SC, Crawford JM. Stilbene epoxidation and detoxification in a Photorhabdus luminescens-nematode symbiosis. Journal Of Biological Chemistry 2017, 292: 6680-6694. PMID: 28246174, PMCID: PMC5399116, DOI: 10.1074/jbc.m116.762542.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnti-Infective AgentsBiological ProductsCatalysisChromatography, High Pressure LiquidCrystallography, X-RayDNA Mutational AnalysisEpoxy CompoundsGene DeletionHydrogen BondingHydrophobic and Hydrophilic InteractionsImmunosuppressive AgentsMagnetic Resonance SpectroscopyMolecular ConformationMutationPhotorhabdusProtein FoldingRhabditoideaStereoisomerismStilbenesSymbiosisConceptsFood signalsInsect infection modelFAD-dependent monooxygenasesFAD prosthetic groupOrphan proteinsInsect larvaeMutualistic relationshipEpoxidase geneNematode developmentCellular detoxificationBiological roleProsthetic groupIntracellular detoxificationAnimal infection modelsInfection modelBiochemical analysisChemical degradation studiesStructural viewNematodesDetoxificationNew insightsCompound 1Major componentNew stilbeneRecovery assays
2016
Pyrazinone protease inhibitor metabolites from Photorhabdus luminescens
Park HB, Crawford JM. Pyrazinone protease inhibitor metabolites from Photorhabdus luminescens. The Journal Of Antibiotics 2016, 69: 616-621. PMID: 27353165, PMCID: PMC5003743, DOI: 10.1038/ja.2016.79.Peer-Reviewed Original ResearchConceptsSpecialized metabolitesNew specialized metabolitesMutualistic associationAmino acid levelsInsect pathogenesisInsect preyGalleria mellonella larvaePhotorhabdus genusP. luminescensPhenotypic variationFamilies HeterorhabditidaeNematode developmentEntomopathogenic bacteriumProtease inhibitory activityFree amino acid levelsRich mediumAmino acidsMellonella larvaePhenotypic variantsMarfey's analysisPhotorhabdusCirculatory fluidCulture extractsMetabolitesHeterorhabditidaeConvergent and Modular Synthesis of Candidate Precolibactins. Structural Revision of Precolibactin A
Healy AR, Vizcaino MI, Crawford JM, Herzon SB. Convergent and Modular Synthesis of Candidate Precolibactins. Structural Revision of Precolibactin A. Journal Of The American Chemical Society 2016, 138: 5426-5432. PMID: 27025153, PMCID: PMC5049697, DOI: 10.1021/jacs.6b02276.Peer-Reviewed Original ResearchChemistry Techniques, SyntheticCyclizationEscherichia coliMagnetic Resonance SpectroscopyMass SpectrometryMolecular StructurePeptidesPolyketides
2014
Comparative Metabolomics and Structural Characterizations Illuminate Colibactin Pathway-Dependent Small Molecules
Vizcaino MI, Engel P, Trautman E, Crawford JM. Comparative Metabolomics and Structural Characterizations Illuminate Colibactin Pathway-Dependent Small Molecules. Journal Of The American Chemical Society 2014, 136: 9244-9247. PMID: 24932672, PMCID: PMC4091280, DOI: 10.1021/ja503450q.Peer-Reviewed Original ResearchConceptsReceptor antagonist activityE. coli Nissle 1917Coli Nissle 1917Ulcerative colitisInflammatory conditionsProbiotic E. coli Nissle 1917Human bowelPathogenic Escherichia coliAntagonist activityNissle 1917Growth inhibitoryCarcinogenic activityProbiotic activitySmall moleculesPathwayStructural network analysisColitisBowelComparative metabolomicsPersistence phenotypeMetabolomics