Source:http://linkedlifedata.com/resource/pubmed/id/19455515
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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
2009-9-2
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pubmed:abstractText |
Iron homeostasis is essential to almost all organisms. In this study, we identified the putative homolog of the iron-storage protein-encoding gene, dpsL, in the intracellular pathogen Legionella pneumophila and demonstrated its expression under iron-limited conditions and its responses to multiple stresses. Quantitative real-time PCR analysis indicated that the expression of dpsL was enhanced under iron limitation regardless of the growth phase. Compared with the wild-type cells, the cells devoid of dpsL were heat and H(2)O(2)-sensitive. In contrast to the dps mutants of other bacteria, the growth of the dpsL mutant in an iron-deprived medium was delayed but finally reached the same cell density as wild-type cells during the stationary phase of growth. The finding that the dpsL mutant is salt resistant suggested the involvement of DpsL in virulence.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
1521-4028
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pubmed:author | |
pubmed:copyrightInfo |
Copyright 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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pubmed:issnType |
Electronic
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pubmed:volume |
49 Suppl 1
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
S79-86
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pubmed:meshHeading |
pubmed-meshheading:19455515-Amino Acid Sequence,
pubmed-meshheading:19455515-Bacterial Proteins,
pubmed-meshheading:19455515-Ferritins,
pubmed-meshheading:19455515-Gene Deletion,
pubmed-meshheading:19455515-Gene Expression Regulation, Bacterial,
pubmed-meshheading:19455515-Genes, Bacterial,
pubmed-meshheading:19455515-Genetic Complementation Test,
pubmed-meshheading:19455515-Hot Temperature,
pubmed-meshheading:19455515-Hydrogen Peroxide,
pubmed-meshheading:19455515-Iron,
pubmed-meshheading:19455515-Legionella pneumophila,
pubmed-meshheading:19455515-Molecular Sequence Data,
pubmed-meshheading:19455515-Mutation,
pubmed-meshheading:19455515-Oxidative Stress,
pubmed-meshheading:19455515-Sequence Alignment,
pubmed-meshheading:19455515-Virulence
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pubmed:year |
2009
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pubmed:articleTitle |
The Legionella pneumophila Dps homolog is regulated by iron and involved in multiple stress tolerance.
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pubmed:affiliation |
Department of Biochemistry, Sun Yat-sen University Guangzhou, China.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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