Structural analysis of DNA sequence: evidence for lateral gene transfer in Thermotoga maritima

Peder Worning, Lars Juhl Jensen, K. E. Nelson, Søren Brunak, David Ussery

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The recently published complete DNA sequence of the bacterium Thermotoga maritima provides evidence, based on protein sequence conservation, for lateral gene transfer between Archaea and Bacteria. We introduce a new method of periodicity analysis of DNA sequences, based on structural parameters, which brings independent evidence for the lateral gene transfer in the genome of T.maritima, The structural analysis relates the Archaea-like DNA sequences to the genome of Pyrococcus horikoshii. Analysis of 24 complete genomic DNA sequences shows different periodicity patterns for organisms of different origin, The typical genomic periodicity for Bacteria is 11 bp whilst it is 10 bp for Archaea, Eukaryotes have more complex spectra but the dominant period in the yeast Saccharomyces cerevisiae is 10.2 bp. These periodicities are most likely reflective of differences in chromatin structure.
    Original languageEnglish
    JournalNucleic Acids Research
    Volume28
    Issue number3
    Pages (from-to)706-709
    ISSN0305-1048
    DOIs
    Publication statusPublished - 2000

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