2020
Sulfamethoxazole drug stress upregulates antioxidant immunomodulatory metabolites in Escherichia coli
Park HB, Wei Z, Oh J, Xu H, Kim CS, Wang R, Wyche TP, Piizzi G, Flavell RA, Crawford JM. Sulfamethoxazole drug stress upregulates antioxidant immunomodulatory metabolites in Escherichia coli. Nature Microbiology 2020, 5: 1319-1329. PMID: 32719505, PMCID: PMC7581551, DOI: 10.1038/s41564-020-0763-4.Peer-Reviewed Original ResearchConceptsAnti-inflammatory interleukin-10Colitis mouse modelInflammatory bowel diseaseColitis symptomsBowel diseaseInterleukin-10Immunological markersPathogenic roleImmunomodulatory metabolitesImmunomodulatory phenotypeGastrointestinal tractMouse modelImmunological activityPrimary human tissuesDrug stressSubinhibitory levelsHuman tissuesEnvironmental isolatesCertain strainsMetabolic pathwaysMetabolitesPatientsEscherichia coliSymptomsIBD
2018
Functional Characterization of a Condensation Domain That Links Nonribosomal Peptide and Pteridine Biosynthetic Machineries in Photorhabdus luminescens
Perez CE, Park HB, Crawford JM. Functional Characterization of a Condensation Domain That Links Nonribosomal Peptide and Pteridine Biosynthetic Machineries in Photorhabdus luminescens. Biochemistry 2018, 57: 354-361. PMID: 29111689, DOI: 10.1021/acs.biochem.7b00863.Peer-Reviewed Original ResearchConceptsNonribosomal peptide synthetasesCondensation domainMetabolic pathwaysSecondary metabolite biosynthesisSpecialized metabolic pathwaysBiosynthetic gene clusterNRPS condensation domainDistinct enzymatic systemsImportant small moleculesSecondary metabolite analysisCitric acid cycleMetabolite biosynthesisFunctional diversityGene clusterBiosynthetic machineryCellular redoxPeptide synthetasesNonribosomal peptidesBiosynthetic systemsQuorum sensingFunctional characterizationSolution studiesGenetic lociNatural productsBiochemical level
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 ResearchConceptsBiosynthetic 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 classes