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Article

Genetic evidence of separate repressor and activator activities of the XylR regulator of the TOL plasmid, pWW0, of Pseudomonas putida.

Molecular microbiology - 1 Mar 1997

Bertoni G, Pérez-Martín J, de Lorenzo V

Abstract excerpt

The XylR protein encoded by pWW0, the TOL (toluene biodegradation) plasmid of Pseudomonas putida, activates at a distance the transcription of Pu and Ps, which are the two sigma(54)-dependent promoters of the plasmid, but it also downregulates its own sigma(70)-promoter, Pr, which divergently overlaps the upstream activating sites of Ps. All regulatory elements that control Pr activity have been faithfully...

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Identifiers

PMID: 9106213
DOI: 10.1046/j.1365-2958.1997.3091673.x

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

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Genetic evidence of separate repressor and activator activities of the XylR regulator of the TOL plasmid, pWW0, of Pseudomonas putida.PMID 9106213Read ↗

Activation of the transcriptional regulator XylR of Pseudomonas putida by release of repression between functional domains.Semantic proximity Read ↗

VTR expression cassettes for engineering conditional phenotypes in Pseudomonas: activity of the Pu promoter of the TOL plasmid under limiting concentrations of the XylR activator protein.Semantic proximity Read ↗

An upstream XylR- and IHF-induced nucleoprotein complex regulates the sigma 54-dependent Pu promoter of TOL plasmid.Semantic proximity Read ↗

Cross talk between catabolic pathways in Pseudomonas putida: XylS-dependent and -independent activation of the TOL meta operon requires the same cis-acting sequences within the Pm promoter.Semantic proximity Read ↗

A T7 RNA polymerase-based system for the construction of Pseudomonas strains with phenotypes dependent on TOL-meta pathway effectors.Semantic proximity Read ↗

XylUW, two genes at the start of the upper pathway operon of TOL plasmid pWW0, appear to play no essential part in determining its catabolic phenotype.Semantic proximity Read ↗

Integration of signals through Crc and PtsN in catabolite repression of Pseudomonas putida TOL plasmid pWW0.Semantic proximity Read ↗

Activation of the Pseudomonas TOL plasmid upper pathway operon. Identification of binding sites for the positive regulator XylR and for integration host factor protein.Semantic proximity Read ↗

The role of the interdomain B linker in the activation of the XylR protein of Pseudomonas putida.Semantic proximity Read ↗

Role of ptsO in carbon-mediated inhibition of the Pu promoter belonging to the pWW0 Pseudomonas putida plasmid.Semantic proximity Read ↗

Design of new promoters and of a dual-bioreporter based on cross-activation by the two regulatory proteins XylR and HbpR.Semantic proximity Read ↗

The IIANtr (PtsN) protein of Pseudomonas putida mediates the C source inhibition of the sigma54-dependent Pu promoter of the TOL plasmid.Semantic proximity Read ↗

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