ADAR1 is an enzyme that belongs to the Adenosine Deaminases Acting on RNA (ADARs) family. These enzymes deaminate adenosines to inosines (RNA editing A-to-I) within double-stranded RNA regions in transcripts. Since inosines are recognized as guanosines by the cellular machinery, RNA editing mediated by ADARs can either lead to the formation of an altered protein (recoding) or affect different aspects of RNA metabolism.Recently, a proteomic analysis led to the identification of novel ADAR1-associated factors and found that a good fraction of them is shared with the Long Interspersed Element 1 (LINE-1 or L1) ribonucleoparticles (RNPs). This evidence suggested a possible role of ADAR1 in regulating the L1 life cycle. By taking advantage of the use of cell culture retrotransposition assays, a novel function of this deaminase as an inhibitor of L1 retrotransposition was demonstrated. These results pave the way toward a better comprehension of the mechanisms of restriction of retrotransposons.

Orecchini, E., Frassinelli, L., & Michienzi, A. (2017). Restricting retrotransposons: ADAR1 is another guardian of the human genome. RNA BIOLOGY, 14(11), 1485-1491 [10.1080/15476286.2017.1341033].

Restricting retrotransposons: ADAR1 is another guardian of the human genome

Orecchini E.
Membro del Collaboration Group
;
Frassinelli L.
Membro del Collaboration Group
;
Michienzi A.
Membro del Collaboration Group
2017

Abstract

ADAR1 is an enzyme that belongs to the Adenosine Deaminases Acting on RNA (ADARs) family. These enzymes deaminate adenosines to inosines (RNA editing A-to-I) within double-stranded RNA regions in transcripts. Since inosines are recognized as guanosines by the cellular machinery, RNA editing mediated by ADARs can either lead to the formation of an altered protein (recoding) or affect different aspects of RNA metabolism.Recently, a proteomic analysis led to the identification of novel ADAR1-associated factors and found that a good fraction of them is shared with the Long Interspersed Element 1 (LINE-1 or L1) ribonucleoparticles (RNPs). This evidence suggested a possible role of ADAR1 in regulating the L1 life cycle. By taking advantage of the use of cell culture retrotransposition assays, a novel function of this deaminase as an inhibitor of L1 retrotransposition was demonstrated. These results pave the way toward a better comprehension of the mechanisms of restriction of retrotransposons.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore BIO/13
English
ADAR1; Aicardi Goutières syndrome; Alu; LINE-1; Retrotransposon
Orecchini, E., Frassinelli, L., & Michienzi, A. (2017). Restricting retrotransposons: ADAR1 is another guardian of the human genome. RNA BIOLOGY, 14(11), 1485-1491 [10.1080/15476286.2017.1341033].
Orecchini, E; Frassinelli, L; Michienzi, A
Articolo su rivista
File in questo prodotto:
File Dimensione Formato  
Restricting retrotransposons ADAR1 is another guardian of the human genome.pdf

accesso aperto

Licenza: Copyright dell'editore
Dimensione 1.09 MB
Formato Adobe PDF
1.09 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/195374
Citazioni
  • ???jsp.display-item.citation.pmc??? 5
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 8
social impact