Terminal-repeat Retrotransposons with GAG domain (TR-GAG) in plant genomes: A new testimony on the complex world of transposable elements - Archive ouverte HAL Access content directly
Journal Articles Genome Biology and Evolution Year : 2015

Terminal-repeat Retrotransposons with GAG domain (TR-GAG) in plant genomes: A new testimony on the complex world of transposable elements

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Abstract

A novel structure of nonautonomous long terminal repeat (LTR) retrotransposons called terminal repeat with GAG domain (TR-GAG) has been described in plants, both in monocotyledonous, dicotyledonous and basal angiosperm genomes. TR-GAGs are relatively short elements in length (<4 kb) showing the typical features of LTR-retrotransposons. However, they carry only one open reading frame coding for the GAG precursor protein involved for instance in transposition, the assembly, and the packaging of the element into the virus-like particle. GAG precursors show similarities with both Copia and Gypsy GAG proteins, suggesting evolutionary relationships of TR-GAG elements with both families. Despite the lack of the enzymatic machinery required for their mobility, strong evidences suggest that TR-GAGs are still active. TR-GAGs represent ubiquitous nonautonomous structures that could be involved in the molecular diversities of plant genomes.
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Dates and versions

hal-01162666 , version 1 (12-01-2021)
hal-01162666 , version 2 (16-11-2021)

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Attribution - NonCommercial - CC BY 4.0

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Cristian Chaparro, Thomas Gayraud, Rogerio Fernandes de Souza, Douglas Silva Domingues, Sélastique Doffou Akaffou, et al.. Terminal-repeat Retrotransposons with GAG domain (TR-GAG) in plant genomes: A new testimony on the complex world of transposable elements. Genome Biology and Evolution, 2015, 7 (2), pp.493-504. ⟨10.1093/gbe/evv001⟩. ⟨hal-01162666v2⟩
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