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FEBS Lett. 2017 Jan;591(2):393-405. doi: 10.1002/1873-3468.12544. Epub 2017 Jan 12.

Regulation of BC200 RNA-mediated translation inhibition by hnRNP E1 and E2.

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Department of Chemistry, KAIST, Daejeon, Korea.


The long noncoding RNA BC200 (brain cytoplasmic RNA, 200 nucleotides) acts as a translational modulator of local protein synthesis at dendrites. BC200 RNA has been shown to inhibit translation in vitro, but it remains unknown how this translation inhibition might be controlled in a cell. Here, we performed yeast three-hybrid screening and identified hnRNP E1 and hnRNP E2 as BC200 RNA-interacting proteins. We found that: these hnRNA proteins could restore BC200 RNA-inhibited translation; BC200 RNA interacts with hnRNP E1 and E2 mainly through its unique 3' C-rich domain; and the RNA binding specificities and modes of the two proteins differed somewhat. Our results offer new insights into the regulation of BC200 RNA-mediated translation inhibition.


BC200 RNA; RNA-protein interaction; hnRNP E1; hnRNP E2; regulation of translation

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