Evidence for transcriptome-wide RNA editing among Sus scrofa PRE-1 SINE elements.
BMC Genomics
; 18(1): 360, 2017 05 09.
Article
en En
| MEDLINE
| ID: mdl-28486975
ABSTRACT
BACKGROUND:
RNA editing by ADAR (adenosine deaminase acting on RNA) proteins is a form of transcriptional regulation that is widespread among humans and other primates. Based on high-throughput scans used to identify putative RNA editing sites, ADAR appears to catalyze a substantial number of adenosine to inosine transitions within repetitive regions of the primate transcriptome, thereby dramatically enhancing genetic variation beyond what is encoded in the genome.RESULTS:
Here, we demonstrate the editing potential of the pig transcriptome by utilizing DNA and RNA sequence data from the same pig. We identified a total of 8550 mismatches between DNA and RNA sequences across three tissues, with 75% of these exhibiting an A-to-G (DNA to RNA) discrepancy, indicative of a canonical ADAR-catalyzed RNA editing event. When we consider only mismatches within repetitive regions of the genome, the A-to-G percentage increases to 94%, with the majority of these located within the swine specific SINE retrotransposon PRE-1. We also observe evidence of A-to-G editing within coding regions that were previously verified in primates.CONCLUSIONS:
Thus, our high-throughput evidence suggests that pervasive RNA editing by ADAR can exist outside of the primate lineage to dramatically enhance genetic variation in pigs.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Edición de ARN
/
Retroelementos
/
Transcriptoma
Límite:
Animals
/
Humans
Idioma:
En
Revista:
BMC Genomics
Asunto de la revista:
GENETICA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Estados Unidos