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Circular RNA Is Expressed across the Eukaryotic Tree of Life

Open access
Wang, Peter L., Bao, Yun, Yee, Muh-Ching, Barrett, Steven P., Hogan, Gregory J., Olsen, Mari N., Dinneny, José R., Brown, Patrick O., Salzman, Julia·2014·PLoS ONE

Abstract

An unexpectedly large fraction of genes in metazoans (human, mouse, zebrafish, worm, fruit fly) express high levels of circularized RNAs containing canonical exons. Here we report that circular RNA isoforms are found in diverse species whose most recent common ancestor existed more than one billion years ago: fungi (Schizosaccharomyces pombe and Saccharomyces cerevisiae), a plant (Arabidopsis thaliana), and protists (Plasmodium falciparum and Dictyostelium discoideum). For all species studied to date, including those in this report, only a small fraction of the theoretically possible circular RNA isoforms from a given gene are actually observed. Unlike metazoans, Arabidopsis, D. discoideum, P. falciparum, S. cerevisiae, and S. pombe have very short introns (∼ 100 nucleotides or shorter), yet they still produce circular RNAs. A minority of genes in S. pombe and P. falciparum have documented examples of canonical alternative splicing, making it unlikely that all circular RNAs are by-products of alternative splicing or 'piggyback' on signals used in alternative RNA processing. In S. pombe, the relative abundance of circular to linear transcript isoforms changed in a gene-specific pattern during nitrogen starvation. Circular RNA may be an ancient, conserved feature of eukaryotic gene expression programs.

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Metadata

Authors
Wang, P. L., Bao, Y., Yee, M.-C., Barrett, S. P., Hogan, G. J., Olsen, M. N., Dinneny, J. R., Brown, P. O., & Salzman, J.
Venue
PLoS ONE
Published
2014-03-07
Volume
9
Issue
3
Pages
e90859
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2086055453
Cited by
754
References
5
FWCI
18.50
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Circular RNA Is Expressed across the Eukaryotic Tree of Life. https://app.cochat.ai/papers/10.1371/journal.pone.0090859
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Wang, P. L., Bao, Y., Yee, M.-C., Barrett, S. P., Hogan, G. J., Olsen, M. N., Dinneny, J. R., Brown, P. O., & Salzman, J. (2014). Circular RNA Is Expressed across the Eukaryotic Tree of Life. PLoS ONE. https://doi.org/10.1371/journal.pone.0090859

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