Transposon
Mostrando 1-12 de 2797 artigos, teses e dissertações.
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1. Diversity of metallo-β-lactamase-encoding genes found in distinct species of Acinetobacter isolated from the Brazilian Amazon Region
BACKGROUND The multidrug resistance (MDR) phenotype is frequently observed in Acinetobacter baumannii, the most clinically relevant pathogenic species of its genus; recently, other species belonging to the A. calcoaceticus-A. baumannii complex have emerged as important MDR nosocomial pathogens. OBJECTIVES The present study aimed to verify the occurrence
Mem. Inst. Oswaldo Cruz. Publicado em: 30/05/2019
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2. Molecular epidemiology of 16S rRNA methyltransferase in Brazil: RmtG in Klebsiella aerogenes ST93 (CC4)
Abstract Aminoglycosides are a class of antibiotics that play a key role in antimicrobial treatment of Multidrug resistant (MDR) Gram-negative bacilli, typically in combination with β-lactams. Ribosomal 16S RNA modification by methyltransferases (e.g. RmtG) is an aminoglycoside resistance mechanism that, along with the occurrence carbapenem-resistant Entero
An. Acad. Bras. Ciênc.. Publicado em: 17/12/2018
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3. Characterisation of plasmid-mediated rmtB-1 in Enterobacteriaceae clinical isolates from São Paulo, Brazil
OBJECTIVES The emergence of 16S rRNA methyltranferases (16 RMTAses) has jeopardised the clinical use of aminoglycosides. RmtB is one of the most frequently reported in Gram-negatives worldwide. In this study, we aimed to estimate the frequency of 16S RMTAses encoding genes in Enterobacteriaceae isolated in a three-month period from a tertiary Brazilian hospi
Mem. Inst. Oswaldo Cruz. Publicado em: 10/12/2018
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4. Characterization and chromosomal mapping of the DgmarMITE transposon in populations of Dichotomius (Luederwaldtinia) sericeus species complex (Coleoptera: Scarabaeidae)
Abstract Transposable elements are dispersed repetitive DNA sequences that can move within the genome and are related to genome and chromosome evolution, adaptation, and speciation. The aim of this study was to characterize and determine the chromosomal location and accumulation of a Mariner-like element in populations of four phylogenetically related specie
Genet. Mol. Biol.. Publicado em: 04/06/2018
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5. Drosophila relics hobo and hobo-MITEs transposons as raw material for new regulatory networks
Abstract Hypermutable strains of Drosophila simulans have been studied for 20 years. Several mutants were isolated and characterized, some of which had phenotypes associated with alteration in development; for example, showing ectopic legs with eyes being expressed in place of antennae. The causal agent of this hypermutability is a non-autonomous hobo-relate
Genet. Mol. Biol.. Publicado em: 26/03/2018
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6. Inactivation of MarR gene homologs increases susceptibility to antimicrobials in Bacteroides fragilis
ABSTRACT Bacteroides fragilis is the strict anaerobic bacteria most commonly found in human infections, and has a high mortality rate. Among other virulence factors, the remarkable ability to acquire resistance to a variety of antimicrobial agents and to tolerate nanomolar concentrations of oxygen explains in part their success in causing infection and colon
Braz. J. Microbiol.. Publicado em: 2018-03
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7. Introns in Cryptococcus
In Cryptococcus neoformans, nearly all genes are interrupted by small introns. In recent years, genome annotation and genetic analysis have illuminated the major roles these introns play in the biology of this pathogenic yeast. Introns are necessary for gene expression and alternative splicing can regulate gene expression in response to environmental cues. I
Mem. Inst. Oswaldo Cruz. Publicado em: 19/02/2018
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8. Characterization of the
hrpZ gene fromPseudomonas syringae pv.maculicola M2Pseudomonas syringae pv.maculicola is a natural pathogen of members of the Brassicaceae plant family. Using a transposon-based mutagenesis strategy inPseudomonas syringae pv.maculicola M2 (PsmM2), we conducted a genetic screen to identify mutants that were capable of growing in M9 mediuBraz. J. Microbiol.. Publicado em: 2015-09
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9. Molecular characterization and epidemiology of cefoxitin resistance among Enterobacteriaceae lacking inducible chromosomal ampC genes from hospitalized and non-hospitalized patients in Algeria: description of new sequence type in Klebsiella pneumoniae isolates
In this study, 922 consecutive non-duplicate clinical isolates of Enterobacteriaceae obtained from hospitalized and non-hospitalized patients at Bejaia, Algeria were analyzed for AmpC-type β-lactamases production. The ampC genes and their genetic environment were characterized using polymerase chain reaction (PCR) and sequencing. Plasmid incompatibility gro
Braz J Infect Dis. Publicado em: 2015-04
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10. Identificação de fatores de transcrição e sinais celulares que regulam a expressão do gene cspC em Caulobacter crescentus. / Identification of transcription factors and cellular signals that regulate cspC gene expression from Caulobacter crescentus.
As proteínas de choque frio pertencem a uma família de proteínas com um domínio altamente conservado, denominado domínio de choque frio (CSD). Estão envolvidas em vários processos celulares, incluindo adaptação a baixas temperaturas, estresse nutricional e fase estacionária. Em C. crescentus, uma α-proteobacteria não pat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/01/2012
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11. Evolutionary history of the Tip100 transposon in the genus Ipomoea
Tip100 is an Ac-like transposable element that belongs to the hAT superfamily. First discovered in Ipomoea purpurea (common morning glory), it was classified as an autonomous element capable of movement within the genome. As Tip100 data were already available in databases, the sequences of related elements in ten additional species of Ipomoea and five commer
Genetics and Molecular Biology. Publicado em: 2012
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12. Soybean genetic transformation: a valuable tool for the functional study of genes and the production of agronomically improved plants
Transgenic plants represent an invaluable tool for molecular, genetic, biochemical and physiological studies by gene overexpression or silencing, transposon-based mutagenesis, protein sub-cellular localization and/or promoter characterization as well as a breakthrough for breeding programs, allowing the production of novel and genetically diverse genotypes.
Genet. Mol. Biol.. Publicado em: 2012