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[Mobile elements and evolution].

M B Evgen'ev

    Molekuliarnaia Biologiia
    |May 23, 2007
    PubMed
    Summary
    This summary is machine-generated.

    Mobile elements (ME) are key genome components that transpose via RNA or cut-and-paste mechanisms. These mobile elements significantly influence gene regulation, adaptation, and evolution, including speciation.

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    Area of Science:

    • Genomics
    • Molecular Biology
    • Evolutionary Biology

    Context:

    • Mobile elements (ME) are pervasive in genomes across all studied organisms.
    • ME are classified into two main types based on their transposition mechanisms: Class I (using RNA intermediates and reverse transcriptase) and Class II (encoding their own transposase for cut-and-paste transposition).

    Purpose:

    • To review the intra- and intergenomic distribution of various ME classes.
    • To document the significant role of ME in regulating cellular genes.
    • To discuss the evolutionary implications of ME, including adaptation and speciation.

    Summary:

    • This review examines the distribution and functional roles of mobile elements (ME) in genomes.
    • It details the distinct transposition mechanisms of Class I and Class II ME.

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  • Evidence suggests ME significantly impact gene regulation and contribute to population adaptation and the evolution of higher organisms.

    • Impact:

    • Understanding ME dynamics is crucial for comprehending genome evolution and plasticity.
    • ME can drive adaptation to environmental changes and contribute to the speciation process.
    • This work highlights the multifaceted roles of mobile elements in shaping organismal evolution.