Transcriptome dynamics of <i>Deinococcus radiodurans</i> recovering from ionizing radiation

DOI Web Site 被引用文献4件
  • Yongqing Liu
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Jizhong Zhou
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Marina V. Omelchenko
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Alex S. Beliaev
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Amudhan Venkateswaran
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Julia Stair
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Liyou Wu
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Dorothea K. Thompson
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Dong Xu
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Igor B. Rogozin
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Elena K. Gaidamakova
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Min Zhai
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Kira S. Makarova
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Eugene V. Koonin
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814
  • Michael J. Daly
    Environmental Sciences and Life Sciences Divisions, Oak Ridge National Laboratory, Oak Ridge, TN 37831; Center for Microbial Ecology, Michigan State University, East Lansing, MI 48824; Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894; and Uniformed Services University of the Health Sciences, Bethesda, MD 20814

説明

<jats:p> <jats:italic>Deinococcus radiodurans</jats:italic> R1 (DEIRA) is a bacterium best known for its extreme resistance to the lethal effects of ionizing radiation, but the molecular mechanisms underlying this phenotype remain poorly understood. To define the repertoire of DEIRA genes responding to acute irradiation (15 kGy), transcriptome dynamics were examined in cells representing early, middle, and late phases of recovery by using DNA microarrays covering ≈94% of its predicted genes. At least at one time point during DEIRA recovery, 832 genes (28% of the genome) were induced and 451 genes (15%) were repressed 2-fold or more. The expression patterns of the majority of the induced genes resemble the previously characterized expression profile of <jats:italic>recA</jats:italic> after irradiation. DEIRA <jats:italic>recA</jats:italic> , which is central to genomic restoration after irradiation, is substantially up-regulated on DNA damage (early phase) and down-regulated before the onset of exponential growth (late phase). Many other genes were expressed later in recovery, displaying a growth-related pattern of induction. Genes induced in the early phase of recovery included those involved in DNA replication, repair, and recombination, cell wall metabolism, cellular transport, and many encoding uncharacterized proteins. Collectively, the microarray data suggest that DEIRA cells efficiently coordinate their recovery by a complex network, within which both DNA repair and metabolic functions play critical roles. Components of this network include a predicted distinct ATP-dependent DNA ligase and metabolic pathway switching that could prevent additional genomic damage elicited by metabolism-induced free radicals. </jats:p>

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