Journal Article

Evidence for human microRNA-offset RNAs in small RNA sequencing data

David Langenberger, Clara Bermudez-Santana, Jana Hertel, Steve Hoffmann, Philipp Khaitovich and Peter F. Stadler

in Bioinformatics

Volume 25, issue 18, pages 2298-2301
Published in print September 2009 | ISSN: 1367-4803
Published online July 2009 | e-ISSN: 1460-2059 | DOI:
Evidence for human microRNA-offset RNAs in small RNA sequencing data

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MicroRNA-offset-RNAs (moRNAs) were recently detected as highly abundant class of small RNAs in a basal chordate. Using short read sequencing data, we show here that moRNAs are also produced from human microRNA precursors, albeit at quite low expression levels. The expression levels of moRNAs are unrelated to those of the associated microRNAs. Surprisingly, microRNA precursors that also show moRNAs are typically evolutionarily old, comprising more than half of the microRNA families that were present in early Bilateria, while evidence for moRNAs was found only for a relative small fraction of microRNA families of recent origin.


Supplementary information: Supplementary data are available at Bioinformatics online and in machine-readable form at

Journal Article.  2371 words.  Illustrated.

Subjects: Bioinformatics and Computational Biology

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