Curation Information

Contributions of [4Fe-4S]-FNR and integration host factor to fnr transcriptional regulation.;Mettert EL, Kiley PJ;Journal of bacteriology 2007 Apr; 189(8):3036-43 [17293415]
IHF [P0A6X7, view regulon]
Reported TF sp.
Escherichia coli str. K-12 substr. MG1655
Reported site sp.
Escherichia coli str. K-12 substr. MG1655
Created by
Dinara Sagitova
Curation notes

Experimental Process

Cells lacking IHF showed decrease in fnr expression. Also, there was no increase in fnr expression in constructs with the mutant upstream site. DNase I footprinting experiments confirmed that IHF binds to the fnr promoter region.

Transcription Factor Binding Sites


Gene Regulation

Regulated genes for each binding site are displayed below. Gene regulation diagrams show binding sites, positively-regulated genes, negatively-regulated genes, both positively and negatively regulated genes, genes with unspecified type of regulation. For each indvidual site, experimental techniques used to determine the site are also given.

Site sequence Regulated genes Gene diagram Experimental techniques TF function TF type
... ... fnr ogt abgT abgB abgA
Experimental technique details Beta-gal reporter assay - Experimental technique details DNAse footprinting (ECO:0005631) - activator not specified