In Vivo and In Vitro Effects of Integration Host Factor at the DmpR-Regulated ς54-Dependent Po Promoter

CC Sze, AD Laurie, V Shingler - Journal of bacteriology, 2001 - Am Soc Microbiol
Transcription from the Pseudomonas CF600-derived ς54-dependent promoter Po is
controlled by the aromatic-responsive activator DmpR. Here we examine the mechanism (s) …

Integration of Global Regulation of Two Aromatic-Responsive σ54-Dependent Systems: a Common Phenotype by Different Mechanisms

CC Sze, LMD Bernardo, V Shingler - Journal of bacteriology, 2002 - Am Soc Microbiol
Pseudomonas-derived regulators DmpR and XylR are structurally and mechanistically
related σ54-dependent activators that control transcription of genes involved in catabolism of …

PspF and IHF bind co‐operatively in the psp promoter‐regulatory region of Escherichia coli

G Jovanovic, P Model - Molecular microbiology, 1997 - Wiley Online Library
PspF bound to the psp enhancer activates Eσ54 holoenzyme‐dependent transcription of the
Escherichia coli phage‐shock protein (psp) operon and autogenously represses its own σ70 …

Identification of an effector specificity subregion within the aromatic-responsive regulators DmpR and XylR by DNA shuffling

E Skärfstad, E O'Neill, J Garmendia… - Journal of …, 2000 - Am Soc Microbiol
The Pseudomonas derived ς54-dependent regulators DmpR and XylR control the
expression of genes involved in catabolism of aromatic compounds. Binding to distinct …

Role of upstream activation sequences and integration host factor in transcriptional activation by the constitutively active prokaryotic enhancer-binding protein PspF

J Dworkin, G Jovanovic, P Model - Journal of molecular biology, 1997 - Elsevier
PspF, the transcriptional activator of the pspA operon of Escherichia coli, which belongs to
the enhancer binding protein (EBP) family of σ54 activator proteins, is constitutively active in …

σ54‐RNA polymerase controls σ70‐dependent transcription from a non‐overlapping divergent promoter

LUM Johansson, D Solera, LMD Bernardo… - Molecular …, 2008 - Wiley Online Library
Divergent transcription of a regulatory gene and a cognate promoter under its control is a
common theme in bacterial regulatory circuits. This genetic organization is found for the …

Aromatic ligand binding and intramolecular signalling of the phenol‐responsive σ54‐dependent regulator DmpR

E O'Neill, LC Ng, CC Sze, V Shingler - Molecular microbiology, 1998 - Wiley Online Library
The Pseudomonas‐derived σ54‐dependent regulator DmpR has an amino‐terminal A‐
domain controlling the specificity of activation by aromatic effectors, a central C‐domain …

σ54-promoter discrimination and regulation by ppGpp and DksA

LMD Bernardo, LUM Johansson, E Skarfstad… - Journal of biological …, 2009 - ASBMB
The σ 54-factor controls expression of a variety of genes in response to environmental cues.
Much previous work has implicated the nucleotide alarmone ppGpp and its co-factor DksA in …

Integration host factor suppresses promiscuous activation of the sigma 54-dependent promoter Pu of Pseudomonas putida.

J Pérez-Martín, V De Lorenzo - Proceedings of the National …, 1995 - National Acad Sciences
In the presence of m-xylene, the Pu promoter of the TOL plasmid of Pseudomonas putida is
activated by the prokaryotic enhancer-binding protein XylR. The intervening DNA segment …

Novel effector control through modulation of a preexisting binding site of the aromatic-responsive ς54-dependent regulator DmpR

E O'Neill, CC Sze, V Shingler - Journal of Biological Chemistry, 1999 - ASBMB
The Pseudomonas derived ς 54-dependent DmpR activator regulates transcription of the
(methyl) phenol catabolic dmp-operon. DmpR is constitutively expressed, but its …