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J Bacteriol. 2012 Dec;194(23):6372-81. doi: 10.1128/JB.00262-12. Epub 2012 Aug 10.

Fur-mediated global regulatory circuits in pathogenic Neisseria species.

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  • 1Department of Medicine, Section of Infectious Diseases, Boston University School of Medicine, Boston, Massachusetts, USA.

Abstract

The ferric uptake regulator (Fur) protein has been shown to function as a repressor of transcription in a number of diverse microorganisms. However, recent studies have established that Fur can function at a global level as both an activator and a repressor of transcription through both direct and indirect mechanisms. Fur-mediated indirect activation occurs via the repression of additional repressor proteins, or small regulatory RNAs, thereby activating transcription of a previously silent gene. Fur mediates direct activation through binding of Fur to the promoter regions of genes. Whereas the repressive mechanism of Fur has been thoroughly investigated, emerging studies on direct and indirect Fur-mediated activation mechanisms have revealed novel global regulatory circuits.

PMID:
22885296
[PubMed - indexed for MEDLINE]
PMCID:
PMC3497530
Free PMC Article
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