(FBIOyF) Departamento de Microbiología
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Examinando (FBIOyF) Departamento de Microbiología por Materia "Acinetobacter baumannii"
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Ítem Acceso Abierto Acinetobacter baumannii NCIMB8209: a rare environmental strain displaying extensive insertion sequence-mediated genome remodeling resulting in the loss of exposed cell structures and defensive mechanisms(American Society for Microbiology, 2020-07-29) Repizo, Guillermo Daniel; Espariz, Martín; Seravalle, Joana L.; Díaz Miloslavich, Juan Ignacio; Steimbrüch, Bruno A.; Shuman, Howard A.; Viale, Alejandro M.Ítem Acceso Abierto Acquisition of plasmids conferring carbapenem and aminoglycoside resistance and loss of surface-exposed macromolecule structures as strategies for the adaptation of Acinetobacter baumannii CC104O/CC15P strains to the clinical setting(Microbiology Society, 2020-03-26) Cameranesi, María Marcela; Paganini, Julián; Limansky, Adriana S.; Moran-Barrio, Jorgelina; Salcedo, Suzana P.; Viale, Alejandro M.; Repizo, Guillermo DanielÍtem Acceso Abierto Differential role of the T6SS in Acinetobacter baumannii virulence(Public Library of Science (PLOS), 2015-09-24) Repizo, Guillermo Daniel; Gagné, Stéphanie; Foucault-Grunenwald, Marie-Laure; Borges, Vitor; Charpentier, Xavier; Limansky, Adriana S.; Gomes, João Paulo; Viale, Alejandro M.; Salcedo, Suzana P.Ítem Acceso Abierto Microevolution in the major outer membrane protein OmpA of Acinetobacter baumannii(Microbiology Society, 2020-06-04) Viale, Alejandro M.; Evans, Benjamin A.Ítem Acceso Abierto Site-specific recombination at XerC/D sites mediates the formation and resolution of plasmid co-integrates carrying a blaOXA-58- and TnaphA6-resistance module in Acinetobacter baumannii(Frontiers Media, 2018-01-26) Cameranesi, Marcela; Morán-Barrio, Jorgelina; Limansky, Adriana S.; Repizo, Guillermo Daniel; Viale, Alejandro M.Ítem Acceso Abierto Staring at the cold sun: blue light regulation is distributed within the genus acinetobacter(Public Library of Science (PLOS), 2013-01-24) Golic, Adrián Ezequiel; Vaneechoutte, Mario; Nemec, Alexandr; Viale, Alejandro M.; Actis, Luis A.; Mussi, María AlejandraWe previously showed that the opportunistic nosocomial pathogen Acinetobacter baumannii is able to sense and respond to light via BlsA, a BLUF (Blue-Light-sensing Using FAD)-domain photoreceptor protein. Here, we extend our previous studies showing that light regulation is not restricted to A. baumannii, but rather widespread within the genus Acinetobacter. First, we found that blue light modulates motility and biofilm formation in many species of the genus, including members of the Acinetobacter calcoaceticus-A. baumannii complex. In many of these species blue light acts as a key factor guiding the decision between motility or sessility at 24°C, whereas in A. baumannii, light inhibits both motility and biofilm formation. We also show that light regulation of motility occurred not only at 24°C but also at 37°C in non-A. baumannii species, contrasting the situation of A. baumannii which only shows photoregulation at 24°C. Second, we show that Acinetobacter baylyi (strain ADP1) BLUF-photoreceptors can functionally replace in vivo the A. baumannii 17978 BlsA protein and that the pathways leading to biofilm formation are inversely regulated at 24°C between these two microorganisms. Finally, we found the presence of predicted genes coding BLUF-containing proteins in all Acinetobacter sequenced genomes, even though the copy number is variable among them. Phylogenetic analysis suggests a common origin for all BLUF domains present in members of this genus, and could distinguish well-differentiated clusters that group together BLUF homologs from different species, a situation particularly clear for members of the ACB complex. Despite a role played by these BLUF domain-containing proteins in the photoregulation observed in the members of the genus Acinetobacter is a likely scenario given our findings in A. baumannii and A. baylyi, further research will contribute to confirm this possibility.Ítem Acceso Abierto Virulence role of the outer membrane protein CarO in carbapenem-resistant Acinetobacter baumannii(Taylor & Francis, 2020-12-10) Labrador-Herrera, Gema; Pérez-Pulido, Antonio J.; Álvarez-Marína, Rocío; Casimiro-Soriguer, Carlos S.; Cebrero-Cangueiro, Tania; Morán-Barrio, Jorgelina; Pachón, Jerónimo; Viale, Alejandro M.; Pachón-Ibáñez, María Eugenia