A small nucleolar RNA functions in rRNA processing in Caenorhabditis elegans.
A small nucleolar RNA functions in rRNA processing in Caenorhabditis elegans.
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DOI:
10.1093/nar/gkq335
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发表时间:
2010-09
影响因子:
14.9
通讯作者:
Ushida C
中科院分区:
文献类型:
--
作者:
Hokii Y;Sasano Y;Sato M;Sakamoto H;Sakata K;Shingai R;Taneda A;Oka S;Himeno H;Muto A;Fujiwara T;Ushida C
CeR-2 RNA is one of the newly identified Caenorhabditis elegans noncoding RNAs (ncRNAs). The characterization of CeR-2 by RNomic studies has failed to classify it into any known ncRNA family. In this study, we examined the spatiotemporal expression patterns of CeR-2 to gain insight into its function. CeR-2 is expressed in most cells from the early embryo to adult stages. The subcellular localization of this RNA is analogous to that of fibrillarin, a major protein of the nucleolus. It was observed that knockdown of C/D small nucleolar ribonucleoproteins (snoRNPs), but not of H/ACA snoRNPs, resulted in the aberrant nucleolar localization of CeR-2 RNA. A mutant worm with a reduced amount of cellular CeR-2 RNA showed changes in its pre-rRNA processing pattern compared with that of the wild-type strain N2. These results suggest that CeR-2 RNA is a C/D snoRNA involved in the processing of rRNAs.
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