Erwinia carotovora has two Kdg R - li ke proteins belonging to the IclR family of transcriptional regulators : identification and characterization of the RexZ activator and the KdgR repressor of pathogenesis
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چکیده
Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 lQW, UK * Laboratoire de G&n&ique Moleculaire des Microorganismes et des Interactions Cel I ulai res, CNRS-UMR 5577, INSA Bat 406,20 Avenue Albert Einstein, 69621 Villeurbanne Cedex, France Erwinia carotovora has two Kdg R-li ke proteins belonging to the IclR family of transcriptional regulators : identification and characterization of the RexZ activator and the KdgR repressor of pathogenesis
منابع مشابه
PehN, a polygalacturonase homologue with a low hydrolase activity, is coregulated with the other Erwinia chrysanthemi polygalacturonases.
Erwinia chrysanthemi 3937 secretes an arsenal of pectinolytic enzymes, including at least eight endo-pectate lyases encoded by pel genes, which play a major role in the soft-rot disease caused by this bacterium on various plants. E. chrysanthemi also produces some hydrolases that cleave pectin. Three adjacent hydrolase genes, pehV, pehW, and pehX, encoding exo-poly-alpha-D-galacturonosidases, h...
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Erwinia carotovora subsp. carotovora, a Gram-negative phytopathogenic bacterium, secretes an extracellular metalloprotease, PrtW. Previous results demonstrated that protease activity is necessary for the normal progression of disease symptoms caused by this bacterium. The present study revealed that the prtW gene constitutes an independent transcriptional unit. It is demonstrated that introduct...
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Erwinia chrysanthemi 3937 secretes five major isoenzymes of pectate lyases encoded by the pel4, pelB, pelC, pelD, and pelE genes and a set of secondary pectate lyases, two of which, pelL and pelZ, have been already identified. We cloned the pelI gene, encoding a ninth pectate lyase of E. chrysanthemi 3937. The pelI reading frame is 1,035 bases long, corresponding to a protein of 344 amino acids...
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The phytopathogenic Gram-negative bacteria Erwinia chrysanthemi secretes pectinases, which are able to degrade the pectic polymers of plant cell walls, and uses the degradation products as a carbon source for growth. We characterized a major outer membrane protein, KdgM, whose synthesis is strongly induced in the presence of pectic derivatives. The corresponding gene was characterized. Analysis...
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