Browsing by Author "DORMAN, CHARLES"
Now showing items 1-20 of 32
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Bacterial DNA topology and infectious disease
(2009)he gram-negative bacterium Escherichia coli and its close relative Salmonella enterica have made important contributions historically to our understanding of how bacteria control DNA supercoiling and of how supercoiling ... -
Bacterial regulon evolution: distinct responses and roles for the identical OmpR proteins of Salmonella Typhimurium and Escherichia coli in the acid stress response
(2014)The evolution of new gene networks is a primary source of genetic innovation that allows bacteria to explore and exploit new niches, including pathogenic interactions with host organisms. For example, the archetypal DNA ... -
Broad scale redistribution of mRNA abundance and transcriptional machinery in response to growth rate in Salmonella enterica serovar Typhimurium
(2017)We have investigated the connection between the four-dimensional architecture of the bacterial nucleoid and the organism's global gene expression programme. By localizing the transcription machinery and the transcriptional ... -
Co-operative roles for DNA supercoiling and nucleoid-associated proteins in the regulation of bacterial transcription
(2013)DNA supercoiling and NAPs (nucleoid-associated proteins) contribute to the regulation of transcription of many bacterial genes. The horizontally acquired SPI (Salmonella pathogenicity island) genes respond positively to ... -
Control of virulence gene transcription by indirect readout in Vibrio cholerae and Salmonella enterica serovar Typhimurium
(2017)Indirect readout mechanisms of transcription control rely on the recognition of DNA shape by transcription factors (TFs). TFs may also employ a direct readout mechanism that involves the reading of the base sequence in the ... -
DNA supercoiling and the Lrp protein determine the directionality of fim switch DNA inversion in Escherichia coli K-12
(2006)Site-specific recombinases of the integrase family usually require cofactors to impart directionality in the recombination reactions that they catalyze. The FimB integrase inverts the Escherichia coli fim switch (fimS) in ... -
The effect of mobile element IS10 on experimental regulatory evolution in Escherichia coli
(2010)Mobile genetic elements are widespread in bacteria, where they cause several kinds of mutations. Although their effects are on the whole negative, rare beneficial mutations caused by insertion sequence elements are frequently ... -
A fundamental regulatory mechanism operating through OmpR and DNA topology controls expression of Salmonella pathogenicity islands SPI-1 and SPI-2
(2012)DNA topology has fundamental control over the ability of transcription factors to access their target DNA sites at gene promoters. However, the influence of DNA topology on protein–DNA and protein–protein interactions is ... -
Genome architecture and global transcriptional control in bacteria: making progress towards a unified model?
(2013)Data obtained with advanced imaging techniques, chromosome conformation capture methods, bioinformatics and molecular genetics, together with insights from polymer physics and mechanobiology, are helping to refine our ... -
H-NS silences gfp, the Green Fluorescent Protein gene: gfpTCD is a genetically remastered gfp gene with reduced susceptibility to H-NS-mediated transcription silencing and with enhanced translation
(2010)The bacterial nucleoid-associated protein H-NS, which preferentially targets and silences A+T-rich genes, binds the ubiquitous reporter gene gfp and dramatically reduces local transcription. We have redesigned gfp to reduce ... -
In vitro DNA binding properties of VirB, the Shigella flexneri virulence regulatory protein
(2003)The DNA-binding activity of the Shigella flexneri VirB transcription factor was studied in vitro. The protein was found to bind non-specifically to DNA, but showed preferential binding to VirB-dependent promoter sequences. ...
