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Article

Localization of OccR-activated and TraR-activated promoters that express two ABC-type permeases and the traR gene of Ti plasmid pTiR10.

Molecular microbiology - 1 Jun 1996

Fuqua C, Winans S C

Abstract excerpt

Conjugation of Agrobacterium tumefaciens wide-host-range octopine-type Ti plasmids is regulated by the LuxR-type transcriptional activator TraR in conjunction with an acylated homoserine lactone designated AAI. Expression of traR in octopine-type Ti plasmids is stimulated by OccR in response to octopine, an opine released from crown gall tumours, and is also positively autoregulated by TraR and AAI. Genetic and...

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PMID: 8809772
DOI: 10.1111/j.1365-2958.1996.tb02640.x

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Localization of OccR-activated and TraR-activated promoters that express two ABC-type permeases and the traR gene of Ti plasmid pTiR10.PMID 8809772Read ↗

Octopine-type Ti plasmids code for a mannopine-inducible dominant-negative allele of traR, the quorum-sensing activator that regulates Ti plasmid conjugal transfer.Semantic proximity Read ↗

A new regulatory element modulates homoserine lactone-mediated autoinduction of Ti plasmid conjugal transfer.Semantic proximity Read ↗

Altered-function mutations in the Agrobacterium tumefaciens OccR protein and in an OccR-regulated promoter.Semantic proximity Read ↗

Identification of amino acid residues of the Agrobacterium tumefaciens quorum-sensing regulator TraR that are critical for positive control of transcription.Semantic proximity Read ↗

Most mutant OccR proteins that are defective in positive control hold operator DNA in a locked high-angle bend.Semantic proximity Read ↗

Identification of amino acid residues of the pheromone-binding domain of the transcription factor TraR that are required for positive control.Semantic proximity Read ↗

Dual control of quorum sensing by two TraM-type antiactivators in Agrobacterium tumefaciens octopine strain A6.Semantic proximity Read ↗

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Mutations in the occQ operator that decrease OccR-induced DNA bending do not cause constitutive promoter activity.Semantic proximity Read ↗

Functional and mutated agrocinopine synthase genes on octopine T-DNAs.Semantic proximity Read ↗

Localization and characterization of the region encoding catabolism of mannopinic acid from the octopine-type Ti plasmid pTi15955.Semantic proximity Read ↗

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