Genes devoid of full-length transposable element insertions are involved in development and in the regulation of transcription in human and closely related species. - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Journal of Molecular Evolution Year : 2010

Genes devoid of full-length transposable element insertions are involved in development and in the regulation of transcription in human and closely related species.

Abstract

Transposable elements (TEs) are major components of mammalian genomes, and their impact on genome evolution is now well established. In recent years several findings have shown that they are associated with the expression level and function of genes. In this study, we analyze the relationships between human genes and full-length TE copies in terms of three factors (gene function, expression level, and selective pressure). We classified human genes according to their TE density, and found that TE-free genes are involved in important functions such as development, transcription, and the regulation of transcription, whereas TE-rich genes are involved in functions such as transport and metabolism. This trend is conserved through evolution. We show that this could be explained by a stronger selection pressure acting on both the coding and non-coding regions of TE-free genes than on those of TE-rich genes. The higher level of expression found for TE-rich genes in tumor and immune system tissues suggests that TEs play an important role in gene regulation.

Dates and versions

hal-00850383 , version 1 (06-08-2013)

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Hussein Mortada, Cristina Vieira, Emmanuelle Lerat. Genes devoid of full-length transposable element insertions are involved in development and in the regulation of transcription in human and closely related species.. Journal of Molecular Evolution, 2010, 71 (3), pp.180-91. ⟨10.1007/s00239-010-9376-5⟩. ⟨hal-00850383⟩
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