Molecular Biology

, Volume 41, Issue 2, pp 203–213

Mobile elements and genome evolution

  • M. B. Evgen’ev
General Problems of Molecular Biology

DOI: 10.1134/S0026893307020033

Cite this article as:
Evgen’ev, M.B. Mol Biol (2007) 41: 203. doi:10.1134/S0026893307020033


Mobile elements (MEs) are an important component of the genome in all eukaryotes and prokaryotes. MEs are divided into two large classes differing in the mechanism of transposition. Class I MEs are transposed via reverse transcription of their RNA transcripts. Class II MEs code for transposase, which acts at the DNA level and recognizes the ends of the cognate ME. The review considers the distribution of MEs from different classes in various genomes, individual chromosomes, and chromatin types. There is ample evidence for an important role of MEs in the regulation of cell genes and evolution of complex eukaryotic genomes. It is thought that ME invasion and subsequent amplification act as a main morphogenetic factor ensuring adaptation of populations to environmental changes and, in some cases, cause rapid speciation.

Key words

mobile elements evolution speciation 

Copyright information

© Pleiades Publishing, Inc. 2007

Authors and Affiliations

  • M. B. Evgen’ev
    • 1
    • 2
  1. 1.Englhardt Institute of Molecular BiologyRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Cell BiophysicsRussian Academy of SciencesPushchino, Moscow regionRussia

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