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      Long noncoding RNAs: functional surprises from the RNA world.

      1 , ,
      Genes & development
      Cold Spring Harbor Laboratory

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          Abstract

          Most of the eukaryotic genome is transcribed, yielding a complex network of transcripts that includes tens of thousands of long noncoding RNAs with little or no protein-coding capacity. Although the vast majority of long noncoding RNAs have yet to be characterized thoroughly, many of these transcripts are unlikely to represent transcriptional "noise" as a significant number have been shown to exhibit cell type-specific expression, localization to subcellular compartments, and association with human diseases. Here, we highlight recent efforts that have identified a myriad of molecular functions for long noncoding RNAs. In some cases, it appears that simply the act of noncoding RNA transcription is sufficient to positively or negatively affect the expression of nearby genes. However, in many cases, the long noncoding RNAs themselves serve key regulatory roles that were assumed previously to be reserved for proteins, such as regulating the activity or localization of proteins and serving as organizational frameworks of subcellular structures. In addition, many long noncoding RNAs are processed to yield small RNAs or, conversely, modulate how other RNAs are processed. It is thus becoming increasingly clear that long noncoding RNAs can function via numerous paradigms and are key regulatory molecules in the cell.

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          Author and article information

          Journal
          Genes Dev
          Genes & development
          Cold Spring Harbor Laboratory
          1549-5477
          0890-9369
          Jul 01 2009
          : 23
          : 13
          Affiliations
          [1 ] Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA.
          Article
          23/13/1494
          10.1101/gad.1800909
          3152381
          19571179
          c0c0534e-ee2a-44be-8e4b-034da4b05a24
          History

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