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- W2234252254 abstract "The majority of bacterial pathogens and opportunists colonize the mucosal surfaces of their hosts by expressing specific adhesins that bind to host target receptors. Many Escherichia coli urinary tract isolates, in particular those that cause kidney infections, contain multiple pyelonephritis-associated pili (pap) operons, each of which is capable of expressing and assembling cell surface fimbriae. Lrp is a regulatory protein that exerts global control over as many as 50 genes in E. coli. In some cases, such as ilvIH, fim switching, and pap pilin transcription, Lrp is a positive regulator. In other cases, such as sdaA, livJ, and livKHMGF, Lrp acts negatively. Analysis of mutations within pap regulatory DNA that allow transcription of pap in the absence of Papl indicates that Papl does not interact with pap DNA. The regulation of pap gene expression is complex and involves a variety of factors including Lrp, Dam, CRP, Papl, PapB, and possibly H-NS. In addition, RimJ, the N-terminal acetylase of ribosomal protein S5, may play a role in thermoregulation. As a member of the Lrp regulon, Pap fimbrial regulation is tied to cellular metabolism, although it is not leucine responsive. Under the CRP regulon, Pap fimbrial expression is shut down when rich carbon sources such as glucose are present." @default.
- W2234252254 created "2016-06-24" @default.
- W2234252254 creator A5064104419 @default.
- W2234252254 date "2014-04-30" @default.
- W2234252254 modified "2023-09-24" @default.
- W2234252254 title "Methylation-Dependent and Lrp-Dependent Fimbrial Gene Regulation in Escherichia coli" @default.
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- W2234252254 doi "https://doi.org/10.1128/9781555818340.ch28" @default.
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