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An activator of glutamate decarboxylase genes regulates the expression of enteropathogenic Escherichia coli virulence genes through control of the plasmid-encoded regulator, Per.

• Soona Shin, Marie-Pierre Castanié-Cornet, John W. Foster, John A. Crawford, Carl Brinkley, J. Kaper
• Molecular microbiology
• 2001

Enteropathogenic Escherichia coli (EPEC) is a major cause of infantile diarrhoea in a number of developing countries and is the prototype of pathogenic bacteria that cause attaching and effacing… (More)

Activation of enteropathogenic Escherichia coli (EPEC) LEE2 and LEE3 operons by Ler.

• Vanessa G Sperandio, Jay L. Mellies, +4 authors J. Kaper
• Molecular microbiology
• 2000

Enteropathogenic Escherichia coli (EPEC) produces attaching and effacing lesions (AE) on epithelial cells. The genes involved in the formation of the AE lesions are contained within a pathogenicity… (More)

Molecular cloning and transcriptional regulation of ompT, a ToxR-repressed gene in Vibrio cholerae.

• Cishan Li, John A. Crawford, Victor J DiRita, J. Kaper
• Molecular microbiology
• 2000

In pathogenic Vibrio cholerae, at least 17 genes are co-ordinately regulated by ToxR. Most of these genes, including those that encode cholera toxin (CT), toxin co-regulated pilus (TCP), accessory… (More)

Analysis of ToxR-dependent transcription activation of ompU, the gene encoding a major envelope protein in Vibrio cholerae.

• John A. Crawford, J. Kaper, Victor J DiRita
• Molecular microbiology
• 1998

The membrane proteins ToxR and ToxS regulate a variety of genes associated with the virulence of Vibrio cholerae, the agent of human cholera. One of the ToxRS-regulated genes is the ompU gene, which… (More)

Isolation and transportation ofTreponema pertenue in golden hamsters

• Sally L. Liska, Peter L. Perine, Elizabeth Hunter, John A. Crawford, John C. Feeley
• Current Microbiology
• 2005

Ten golden hamsters of the CB/Ss LAK strain were flown to Africa, and six of them were inoculated with lesion exudate from yaws patients in an attempt to isolate newer strains ofTreponema pertenue.… (More)

Second-generation recombination-based in vivo expression technology for large-scale screening for Vibrio cholerae genes induced during infection of the mouse small intestine.

• Carlos G. Osorio, John A. Crawford, Jane M. Michalski, Hector F Martinez-Wilson, J. Kaper, Andrew Camilli
• Infection and immunity
• 2005

We have constructed an improved recombination-based in vivo expression technology (RIVET) and used it as a screening method to identify Vibrio cholerae genes that are transcriptionally induced during… (More)

Membrane localization of the ToxR winged-helix domain is required for TcpP-mediated virulence gene activation in Vibrio cholerae.

• John A. Crawford, Eric S. Krukonis, Victor J DiRita
• Molecular microbiology
• 2003

ToxR is a bitopic membrane protein that controls virulence gene expression in Vibrio cholerae. Its cytoplasmic domain is homologous to the winged helix-turn-helix ('winged helix')… (More)

Virulence gene regulation inside and outside.

• Victor J DiRita, N. Cary Engleberg, Andrew Heath, Alita A Miller, John A. Crawford, Rosemary Yu
• Philosophical transactions of the Royal Society…
• 2000

Much knowledge about microbial gene regulation and virulence is derived from genetic and biochemical studies done outside of hosts. The aim of this review is to correlate observations made in vitro… (More)

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