Additional ORFs in plant LTR-retrotransposons
Vicient Sánchez, Carlos M. (Centre de Recerca en Agrigenòmica)
Casacuberta i Suñer, Josep M. 1962- (Centre de Recerca en Agrigenòmica)

Data:	2020
Resum:	LTR-retrotransposons share a common genomic organization in which the 5' long terminal repeat (LTR) is followed by the gag and pol genes and terminates with the 3' LTR. Although GAG-POL-encoded proteins are considered sufficient to accomplish the LTR-retrotransposon transposition, a number of elements carrying additional open reading frames (aORF) have been described. In some cases, the presence of an aORF can be explained by a phenomenon similar to retrovirus gene transduction, but in these cases the aORFs are present in only one or a few copies. On the contrary, many elements contain aORFs, or derivatives, in all or most of their copies. These aORFs are more frequently located between pol and 3' LTR, and they could be in sense or antisense orientation with respect to gag-pol. Sense aORFs include those encoding for ENV-like proteins, so called because they have some structural and functional similarities with retroviral ENV proteins. Antisense aORFs between pol and 3' LTR are also relatively frequent and, for example, are present in some characterized LTR-retrotransposon families like maize Grande, rice RIRE2, or Silene Retand, although their possible roles have been not yet determined. Here, we discuss the current knowledge about these sense and antisense aORFs in plant LTR-retrotransposons, suggesting their possible origins, evolutionary relevance, and function.
Ajuts:	Ministerio de Ciencia e Innovación AGL2016-78992-R Ministerio de Economía y Competitividad SEV-2015-0533
Nota:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Additional ORF ; Antisense ; Env ; LTR-retrotransposon ; Retrovirus
Publicat a:	Frontiers in plant science, Vol. 11 (May 2020) , art. 555, ISSN 1664-462X

DOI: 10.3389/fpls.2020.00555
PMID: 32528484

5 p, 629.0 KB

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