Browsing by Author "f8f63087-b4f3-4e7f-b1c2-88a799d65de8"
Now showing items 1-9 of 9
-
Toledo, Héctor; Valenzuela, Manuel; Rivas, Ana; Jerez, Carlos A. (2002)To determine the existence of an acid stress response in Helicobacter pylori the global changes in the proteins synthesized by the bacterium when subjected to an acid stress were studied. H. pylori ATCC43504 previously ...
-
Mora Ramírez, Pablo Eduardo; Toledo, Héctor; Dominique Guiliani, Nicolas Simon; Jerez, Carlos A. (2002)By proteomic analysis we found a 21-kDa protein (P21) from Acidithiobacillus ferrooxidans ATCC 19859 whose synthesis was greatly increased by growth of the bacteria in pyrite, thiosulfate, elemental sulfur, CuS, and ZnS ...
-
Ramírez, Manuel; Toledo, Héctor; Obreque Slier, Elías; Peña Neira, Álvaro; López Solís, Remigio (2011)Astringency, an orosensory sensation associated with dietary tannins, contributes to food appetitiveness/aversiveness. However, astringency perception varies greatly among individuals. This study examined whether genetically ...
-
Valenzuela, Manuel; Albar, Juan P.; Paradela, Alberto; Toledo, Héctor (2011)Background: Helicobacter pylori colonizes the acid environment of the gastric mucosa. Like other enteric bacterial pathogens, including Salmonella enterica, which must survive a brief exposure to that environment, H. pylori ...
-
Valenzuela, Manuel; Pérez Pérez, Guillermo; Corvalán, Alejandro H.; Carrasco, Gonzalo; Urra, Hery; Bravo, Denisse; Toledo, Héctor; Quest, Andrew F. G. (2010)Helicobacter pylori infects the human stomach and modifies signaling pathways that affect gastric epithelial cell proliferation and viability. Chronic exposure to this pathogen contributes to the onset of gastric atrophy, ...
-
Toledo, Héctor; Jerez, Carlos A. (1985)The in vitro methylation of the elongation factor EF-Tu from Escherichia coli was investigated. The methylation of newly synthesized EF-Tu was obtained using lambda rifd 18 DNA as template and S-adenosyl [methyl-3H]methionine ...
-
Toledo, Héctor; Jerez, Carlos A. (1989)The role of methylation of elongation factor EF-Tu from Escherichia coli was investigated. The methylated factor was obtained from cells harvested at the late stationary growth phase. Submethylated forms of the factor were ...
-
Valenzuela, Manuel; Cerda, Oscar; Toledo, Héctor (Society of Biology of Chile, 2003)
-
Cerda, Oscar A.; Núñez-Villena, Felipe; Soto, Sarita E.; Ugalde, José Manuel; López Solís, Remigio; Toledo, Héctor (2011)About half of the human population is infected with Helicobacter pylori, a bacterium causing gastritis, peptic ulcer and progression to gastric cancer. Chemotaxis and flagellar motility are required for colonization and ...