The nuclear export of circular RNAs is primarily defined by their length
2019
Li, Zhengguo | Kearse, Michael G. | Huang, Chuan
Although it was long assumed that eukaryotic pre-mRNAs are almost always spliced to generate linear mRNAs, it is now clear that thousands of protein-coding genes can be non-canonically spliced using backsplicing to produce circular RNAs (circRNAs). Most mature circRNAs accumulate in the cytoplasm; however, little is known about how circRNAs are exported from the nucleus to the cytoplasm as they lack many of the common signals used for mRNA export. In this point-of-view article, we will discuss our recently identified circRNA nuclear export pathway and address important open questions in the field.
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