piRNA-like RNAs in the marsupial Monodelphis domestica identify transcription clusters and likely marsupial transposon targets

piRNA-like RNAs in the marsupial Monodelphis domestica identify transcription clusters and likely... PIWI-interacting RNAs (piRNAs) are a recently discovered class of small noncoding RNAs that have been detected in human, mouse, rat, zebrafish, and Drosophila genomes. We have utilized a size-directed small-RNA cloning procedure to clone and map more than 300 candidate piRNA-like small RNAs in the genome of the marsupial species Monodelphis domestica. Our results are consistent with those from other species in that the piRNA-like candidate sequences range in size from 28 to 31 nucleotides, show a pronounced preference for uridine at the 5′ end, are transcribed from a few large clusters, appear to target transposons, and display virtually no sequence conservation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

piRNA-like RNAs in the marsupial Monodelphis domestica identify transcription clusters and likely marsupial transposon targets

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Publisher
Springer-Verlag
Copyright
Copyright © 2008 by Springer Science+Business Media, LLC
Subject
Life Sciences; Zoology ; Anatomy ; Cell Biology
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s00335-008-9109-x
Publisher site
See Article on Publisher Site

Abstract

PIWI-interacting RNAs (piRNAs) are a recently discovered class of small noncoding RNAs that have been detected in human, mouse, rat, zebrafish, and Drosophila genomes. We have utilized a size-directed small-RNA cloning procedure to clone and map more than 300 candidate piRNA-like small RNAs in the genome of the marsupial species Monodelphis domestica. Our results are consistent with those from other species in that the piRNA-like candidate sequences range in size from 28 to 31 nucleotides, show a pronounced preference for uridine at the 5′ end, are transcribed from a few large clusters, appear to target transposons, and display virtually no sequence conservation.

Journal

Mammalian GenomeSpringer Journals

Published: May 13, 2008

References

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