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Sensory transduction in the activation of synthesis of pathogenicity factors by a diffusible signal molecule in Xanthomonas campestris

ReferencePRS12153
Principal Investigator / Supervisor Dr S Spiro
Co-Investigators /
Co-Supervisors
Institution University of East Anglia
DepartmentSainsbury Laboratory
Funding typeResearch
Value (£) 121,343
StatusCompleted
TypeResearch Grant
Start date 23/11/1999
End date 23/09/2002
Duration34 months

Abstract

Synthesis of pathogenicity factors in Xanthomonas campestris is positively regulated by the rpf cluster of genes. Two members of this cluster, rpfF and rpfB, are involved in regulation mediated by small diffusible molecule (DSF) which is not an N-acyl homoserine lactone. The aims of this work are 1) to investigate the roles of rpfG/C/H, which encode components of a signal transduction system, in the sensing of DSF and activation of pathogenicity gene transcription. This will be done through creation of specific non-polar mutations in these genes and through the creation of mutant alleles simulating phosphorylated and non- phosphorylated forms of the regulatory proteins 2) to identify further genes required for the response to DSF through transposon mutagenesis 3) to use 2D gel electrophoresis to identify cellular proteins which are DSF-regulated.

Summary

unavailable
Committee Closed Committee - Plant & Microbial Sciences (PMS)
Research TopicsX – not assigned to a current Research Topic
Research PriorityX – Research Priority information not available
Research Initiative Prokaryotic Responses to Environmental Stress (PRS) [1999]
Funding SchemeX – not Funded via a specific Funding Scheme
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