Iron Transporters
Mostrando 1-12 de 59 artigos, teses e dissertações.
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1. Iron homeostasis related genes in rice
Iron is essential for plants. However, excess iron is toxic, leading to oxidative stress and decreased productivity. Therefore, plants must use finely tuned mechanisms to keep iron homeostasis in each of their organs, tissues, cells and organelles. A few of the genes involved in iron homeostasis in plants have been identified recently, and we used some of th
Publicado em: 2010
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2. Metabolismo de zinco em Paracoccidioides bradiliensis
The thermally dimorphic fungus Paracoccidioides brasiliensis is the agent responsible for causing paracoccidioidomycosis, a common systemic mycosis in Latin America. The infectious process is characterized by the fungus conversion from a non-pathogenic to a pathogenic form. The infectious process establishment depends on the acquisition of essential micronut
Publicado em: 2009
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3. Gene Expression in Xanthomonas axonopodis pv. citri Mediated by Plant Inducible Promoter (PIP-box) / "Expressão gênica em Xanthomonas axonopodis pv. citri controlada por promotores induzidos pela planta hospedeira"
The citrus canker, caused by the bacterial pathogen Xanthomonas axonopodis pv citri (Xac), is considered worldwide as one of the most important disease of citrus crop due to the lack of resistance in citrus plants and to the absence of efficient methods to control the disease. It was already shown that several genes involved in virulence and pathogenicity in
Publicado em: 2006
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4. Cadmium and iron transport by members of a plant metal transporter family in Arabidopsis with homology to Nramp genes
Metal cation homeostasis is essential for plant nutrition and resistance to toxic heavy metals. Many plant metal transporters remain to be identified at the molecular level. In the present study, we have isolated AtNramp cDNAs from Arabidopsis and show that these genes complement the phenotype of a metal uptake deficient yeast strain, smf1. AtNramps show hom
The National Academy of Sciences.
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5. The mechanism of ferrichrome transport through Arn1p and its metabolism in Saccharomyces cerevisiae
Siderophores are low molecular weight compounds, synthesized and secreted by microorganisms, that specifically bind ferric iron with exceptionally high affinity. Microbes capture these compounds and take up the bound iron through specific, high-affinity systems. Saccharomyces cerevisiae can take up iron bound to siderophores through the transporters of the A
The National Academy of Sciences.
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6. Ferrichrome induces endosome to plasma membrane cycling of the ferrichrome transporter, Arn1p, in Saccharomyces cerevisiae
Siderophores are small iron-binding molecules that are synthesized and secreted in the iron-free form by microorganisms. Saccharomyces cerevisiae takes up iron bound to siderophores by two separate systems, one of which requires the ARN family of sidero phore–iron transporters. Arn1p and Arn3p are expressed in endosome-like intracellular vesicles. Here we
Oxford University Press.
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7. Immunization with Components of Two Iron Uptake ABC Transporters Protects Mice against Systemic Streptococcus pneumoniae Infection
American Society for Microbiology.
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8. Saccharomyces cerevisiae Expresses Three Functionally Distinct Homologues of the Nramp Family of Metal Transporters
The baker's yeast Saccharomyces cerevisiae expresses three homologues of the Nramp family of metal transporters: Smf1p, Smf2p, and Smf3p, encoded by SMF1, SMF2, and SMF3, respectively. Here we report a comparative analysis of the yeast Smf proteins at the levels of localization, regulation, and function of the corresponding metal transporters. Smf1p and Smf2
American Society for Microbiology.
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9. The hFbpABC Transporter from Haemophilus influenzae Functions as a Binding-Protein-Dependent ABC Transporter with High Specificity and Affinity for Ferric Iron
Pathogenic Haemophilus influenzae, Neisseria spp. (Neisseria gonorrhoeae and N. meningitidis), Serratia marcescens, and other gram-negative bacteria utilize a periplasm-to-cytosol FbpABC iron transporter. In this study, we investigated the H. influenzae FbpABC transporter in a siderophore-deficient Escherichia coli background to assess biochemical aspects of
American Society for Microbiology.
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10. Characterization of Pit, a Streptococcus pneumoniae Iron Uptake ABC Transporter
Bacteria frequently have multiple mechanisms for acquiring iron, an essential micronutrient, from the environment. We have identified a four-gene Streptococcus pneumoniae operon, named pit, encoding proteins with similarity to components of a putative Brachyspira hyodysenteriae iron uptake ABC transporter, Bit. An S. pneumoniae strain containing a defined mu
American Society for Microbiology.
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11. A Mutation of the Mitochondrial ABC Transporter Sta1 Leads to Dwarfism and Chlorosis in the Arabidopsis Mutant starik
A mutation in the Arabidopsis gene STARIK leads to dwarfism and chlorosis of plants with an altered morphology of leaf and cell nuclei. We show that the STARIK gene encodes the mitochondrial ABC transporter Sta1 that belongs to a subfamily of Arabidopsis half-ABC transporters. The severity of the starik phenotype is suppressed by the ectopic expression of th
American Society of Plant Physiologists.
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12. Genomic Profiling of Iron-Responsive Genes in Salmonella enterica Serovar Typhimurium by High-Throughput Screening of a Random Promoter Library
The importance of iron to bacteria is shown by the presence of numerous iron-scavenging and transport systems and by many genes whose expression is tightly regulated by iron availability. We have taken a global approach to gene expression analysis of Salmonella enterica serovar Typhimurium in response to iron by combining efficient, high-throughput methods w
American Society for Microbiology.