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- W2597573945 abstract "Many Proteobacteria possess a nitrogen-metabolic phosphotransferase system (PTSNtr) consisting of EINtr, NPr, and EIIANtr (encoded by ptsP, ptsO, and ptsN, respectively). The PTSNtr plays diverse regulatory roles, but the substrate phosphorylated by EIIANtr and its primary functions have not yet been identified. To comprehensively understand the roles of PTSNtr in Salmonella Typhimurium, we compared the whole transcriptomes of wild-type and a ΔptsN mutant. Genome-wide RNA sequencing revealed that 3.5% of the annotated genes were up- or down-regulated by three-fold or more in the absence of EIIANtr. The ΔptsN mutant significantly down-regulated the expression of genes involved in vitamin B12 synthesis, 1,2-propanediol utilization, and propionate catabolism. Moreover, the invasiveness of the ΔptsN mutant increased about 5-fold when 1,2-propanediol or propionate was added, which was attributable to the increased stability of HilD, the transcriptional regulator of Salmonella pathogenicity island-1. Interestingly, an abundance of 1,2-propanediol or propionate promoted the production of EIIANtr, suggesting the possibility of a positive feedback loop between EIIANtr and two catabolic pathways. These results demonstrate that EIIANtr is a key factor for the utilization of 1,2-propanediol and propionate as carbon and energy sources, and thereby modulates the invasiveness of Salmonella via 1,2-propanediol or propionate catabolism." @default.
- W2597573945 created "2017-04-07" @default.
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- W2597573945 date "2017-03-23" @default.
- W2597573945 modified "2023-10-12" @default.
- W2597573945 title "Enzyme IIANtr Regulates Salmonella Invasion Via 1,2-Propanediol And Propionate Catabolism" @default.
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- W2597573945 doi "https://doi.org/10.1038/srep44827" @default.
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