Terminal-repeat retrotransposons with GAG domain in plant genomes: a new testimony on the complex world of transposable elements

Chaparro, Cristian; Gayraud, Thomas; Souza, Rogerio Fernandes de; Domingues, Douglas Silva [UNESP]; Akaffou, Selastique; Laforga Vanzela, Andre Luis; Kochko, Alexandre de; Rigoreau, Michel; Crouzillat, Dominique; Hamon, Serge; Hamon, Perla; Guyot, Romain

Terminal-repeat retrotransposons with GAG domain in plant genomes: a new testimony on the complex world of transposable elements

Arquivos

WOS000351607800007.pdf (554.24 KB)

Data

2015-02-01

Autores

Chaparro, Cristian

Gayraud, Thomas

Souza, Rogerio Fernandes de

Domingues, Douglas Silva

Akaffou, Selastique

Laforga Vanzela, Andre Luis

Kochko, Alexandre de

Rigoreau, Michel

Crouzillat, Dominique

Hamon, Serge

Editor

Oxford Univ Press

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

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.