Luis Ielpi

Functional characterization of GumK, a membrane-associated {beta}-glucuronosyltransferase from Xanthomonas campestris required for xanthan polysaccharide synthesis (2004)

Barreras, Máximo, Abdian, Patricia L., Ielpi, Luis

Xanthomonas campestris is a gram negative bacterium that produces an exopolysaccharide termed xanthan gum. Xanthan is involved in a variety of biological functions including pathogenesis and is...

Functional characterization of GumK, a membrane-associated {beta}-glucuronosyltransferase from Xanthomonas campestris required for xanthan polysaccharide synthesis (2004)

Barreras, Máximo, Abdian, Patricia L., Ielpi, Luis

Xanthomonas campestris is a Gram-negative bacterium that produces an exopolysaccharide known as xanthan gum. Xanthan is involved in a variety of biological functions, including pathogenesis, and is...

Functional characterization of GumK, a membrane-associated {beta}-glucuronosyltransferase from Xanthomonas campestris required for xanthan polysaccharide synthesis (2004)

Barreras, Máximo, Abdian, Patricia L., Ielpi, Luis

Xanthomonas campestris is a gram negative bacterium that produces an exopolysaccharide termed xanthan gum. Xanthan is involved in a variety of biological functions including pathogenesis and is...

New Mobilizable Vectors Suitable for Gene Replacement in Gram-Negative Bacteria and Their Use in Mapping of the 3′ End of the Xanthomonas campestris pv. campestris gum Operon

Katzen, Federico, Becker, Anke, Ielmini, M. Verónica, Oddo, Cristian G., Ielpi, Luis

We describe useful vectors to select double-crossover events directly in site-directed marker exchange mutagenesis in gram-negative bacteria. These vectors contain the gusA marker gene, providing...

Xanthomonas campestris pv. campestris gum Mutants: Effects on Xanthan Biosynthesis and Plant Virulence

Katzen, Federico, Ferreiro, Diego U., Oddo, Cristian G., Ielmini, M. Verónica, Becker, Anke, Pühler, Alfred, ...

Xanthan is an industrially important exopolysaccharide produced by the phytopathogenic, gram-negative bacterium Xanthomonas campestris pv. campestris. It is composed of polymerized pentasaccharide...

Pathogen DNA as target for host-generated oxidative stress: Role for repair of bacterial DNA damage in Helicobacter pylori colonization

O'Rourke, Eyleen J., Chevalier, Catherine, Pinto, A. Viviana, Thiberge, Jean Michel, Ielpi, Luis, Labigne, Agnès, ...

Helicobacter pylori elicits an oxidative stress during host colonization. This oxidative stress is known to cause lesions in the host DNA. Here we addressed the question as to whether the pathogen...

Evidence for the Active Role of a Novel Nuclease from Helicobacter pylori in the Horizontal Transfer of Genetic Information

O'Rourke, Eyleen J., Pinto, A. Viviana, Petroni, E. Alejandro, Tolmasky, Marcelo E., Ielpi, Luis

Helicobacter pylori is a gram-negative bacterium that colonizes the human stomach, causes gastritis, and is associated with ulcers and gastric cancer. H. pylori is naturally competent for...

New Mobilizable Vectors Suitable for Gene Replacement in Gram-Negative Bacteria and Their Use in Mapping of the 3′ End of the Xanthomonas campestris pv. campestris gum Operon

Katzen, Federico, Becker, Anke, Ielmini, M. Verónica, Oddo, Cristian G., Ielpi, Luis

We describe useful vectors to select double-crossover events directly in site-directed marker exchange mutagenesis in gram-negative bacteria. These vectors contain the gusA marker gene, providing...

Xanthomonas campestris pv. campestris gum Mutants: Effects on Xanthan Biosynthesis and Plant Virulence

Katzen, Federico, Ferreiro, Diego U., Oddo, Cristian G., Ielmini, M. Verónica, Becker, Anke, Pühler, Alfred, ...

Xanthan is an industrially important exopolysaccharide produced by the phytopathogenic, gram-negative bacterium Xanthomonas campestris pv. campestris. It is composed of polymerized pentasaccharide...

Pathogen DNA as target for host-generated oxidative stress: Role for repair of bacterial DNA damage in Helicobacter pylori colonization

O'Rourke, Eyleen J., Chevalier, Catherine, Pinto, A. Viviana, Thiberge, Jean Michel, Ielpi, Luis, Labigne, Agnès, ...

Helicobacter pylori elicits an oxidative stress during host colonization. This oxidative stress is known to cause lesions in the host DNA. Here we addressed the question as to whether the pathogen...

Evidence for the Active Role of a Novel Nuclease from Helicobacter pylori in the Horizontal Transfer of Genetic Information

O'Rourke, Eyleen J., Pinto, A. Viviana, Petroni, E. Alejandro, Tolmasky, Marcelo E., Ielpi, Luis

Helicobacter pylori is a gram-negative bacterium that colonizes the human stomach, causes gastritis, and is associated with ulcers and gastric cancer. H. pylori is naturally competent for...

Crystallization and preliminary crystallographic characterization of GumK, a membrane-associated glucuronosyltransferase from Xanthomonas campestris required for xanthan polysaccharide synthesis

Barreras, Máximo, Bianchet, Mario A., Ielpi, Luis

Crystallization of a membrane-associated glucuronosyltransferase.