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- W1685828115 abstract "Summary Fur is a well‐known iron‐responsive repressor of gene transcription, which is used by many bacteria to respond to the low‐iron environment that pathogens encounter during infection. Four promoters of Neisseria meningitidis predicted to have Fur‐binding boxes were selected to study the molecular interactions between Fur and the promoter regions of genes expected to play a central role in survival and pathogenesis. We demonstrate that Fur acts not only as a repressor, but also as an activator of gene expression both in vivo and in vitro . We report that Fur binds to operators located upstream of three promoters that are positively regulated in vivo by Fur and iron, whereas Fur binds to an operator overlapping the classically iron‐repressed tbp promoter. Deletion of the upstream operator in the norB promoter abolished activation of transcription in vivo in response to iron and in vitro in response to Fur. The role of such a dual mechanism of Fur regulation during infection is discussed." @default.
- W1685828115 created "2016-06-24" @default.
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- W1685828115 date "2004-04-08" @default.
- W1685828115 modified "2023-10-13" @default.
- W1685828115 title "Fur functions as an activator and as a repressor of putative virulence genes in <i>Neisseria meningitidis</i>" @default.
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- W1685828115 doi "https://doi.org/10.1111/j.1365-2958.2004.04030.x" @default.
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