Primate-specific ORF0 contributes to retrotransposon-mediated diversity.

TitlePrimate-specific ORF0 contributes to retrotransposon-mediated diversity.
Publication TypeJournal Article
Year of Publication2015
AuthorsDenli AM, Narvaiza I, Kerman BE, Pena M, Benner C, Marchetto MCN, Diedrich JK, Aslanian A, Ma J, Moresco JJ, Moore L, Hunter T, Saghatelian A, Gage FH
JournalCell
Volume163
Issue3
Pagination583-93
Date Published2015 Oct 22
ISSN1097-4172
Keywords5' Untranslated Regions, Amino Acid Sequence, Animals, Base Sequence, Cytoplasm, Humans, Long Interspersed Nucleotide Elements, Molecular Sequence Data, Nuclear Proteins, Open Reading Frames, Pan troglodytes, Retroelements, Ribosomes, RNA Processing, Post-Transcriptional, RNA, Antisense, RNA, Messenger, Sequence Alignment
Abstract

LINE-1 retrotransposons are fast-evolving mobile genetic entities that play roles in gene regulation, pathological conditions, and evolution. Here, we show that the primate LINE-1 5'UTR contains a primate-specific open reading frame (ORF) in the antisense orientation that we named ORF0. The gene product of this ORF localizes to promyelocytic leukemia-adjacent nuclear bodies. ORF0 is present in more than 3,000 loci across human and chimpanzee genomes and has a promoter and a conserved strong Kozak sequence that supports translation. By virtue of containing two splice donor sites, ORF0 can also form fusion proteins with proximal exons. ORF0 transcripts are readily detected in induced pluripotent stem (iPS) cells from both primate species. Capped and polyadenylated ORF0 mRNAs are present in the cytoplasm, and endogenous ORF0 peptides are identified upon proteomic analysis. Finally, ORF0 enhances LINE-1 mobility. Taken together, these results suggest a role for ORF0 in retrotransposon-mediated diversity.

DOI10.1016/j.cell.2015.09.025
Alternate JournalCell
PubMed ID26496605
Category: 
Gage Laboratory