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dc.contributor.authorRawle, Rachel A.
dc.contributor.authorTokmina-Lukaszewska, Monika
dc.contributor.authorShi, Zunji
dc.contributor.authorKang, Yoon-Suk
dc.contributor.authorTripet, Brian P.
dc.contributor.authorDang, Fang
dc.contributor.authorWang, Gejiao
dc.contributor.authorMcDermott, Timothy R.
dc.contributor.authorCopie, Valerie
dc.contributor.authorBothner, Brian
dc.identifier.citationRawle, R. A., Tokmina-Lukaszewska, M., Shi, Z., Kang, Y. S., Tripet, B. P., Dang, F., ... & Bothner, B. (2020). Metabolic Responses to Arsenite Exposure Regulated through Histidine Kinases PhoR and AioS in Agrobacterium tumefaciens 5A. Microorganisms, 8(9), 1339.en_US
dc.description.abstractArsenite (AsIII) oxidation is a microbially-catalyzed transformation that directly impacts arsenic toxicity, bioaccumulation, and bioavailability in environmental systems. The genes for AsIII oxidation (aio) encode a periplasmic AsIII sensor AioX, transmembrane histidine kinase AioS, and cognate regulatory partner AioR, which control expression of the AsIII oxidase AioBA. The aio genes are under ultimate control of the phosphate stress response via histidine kinase PhoR. To better understand the cell-wide impacts exerted by these key histidine kinases, we employed 1H nuclear magnetic resonance (1H NMR) and liquid chromatography-coupled mass spectrometry (LC-MS) metabolomics to characterize the metabolic profiles of ΔphoR and ΔaioS mutants of Agrobacterium tumefaciens 5A during AsIII oxidation. The data reveals a smaller group of metabolites impacted by the ΔaioS mutation, including hypoxanthine and various maltose derivatives, while a larger impact is observed for the ΔphoR mutation, influencing betaine, glutamate, and different sugars. The metabolomics data were integrated with previously published transcriptomics analyses to detail pathways perturbed during AsIII oxidation and those modulated by PhoR and/or AioS. The results highlight considerable disruptions in central carbon metabolism in the ΔphoR mutant. These data provide a detailed map of the metabolic impacts of AsIII, PhoR, and/or AioS, and inform current paradigms concerning arsenic–microbe interactions and nutrient cycling in contaminated environments.en_US
dc.titleMetabolic Responses to Arsenite Exposure Regulated through Histidine Kinases PhoR and AioS in Agrobacterium tumefaciens 5Aen_US
mus.relation.collegeCollege of Agricultureen_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentChemistry & Biochemistry.en_US
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.relation.departmentMicrobiology & Cell Biology.en_US
mus.relation.universityMontana State University - Bozemanen_US

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