Identification of human miRNA precursors that resemble box C/D snoRNAs.
Identification of human miRNA precursors that resemble box C/D snoRNAs.
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类似于盒子C/d snornas的人类miRNA前体的识别。
DOI:
10.1093/nar/gkq1355
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发表时间:
2011-05
影响因子:
14.9
通讯作者:
Lamond AI
中科院分区:
文献类型:
--
作者:
Ono M;Scott MS;Yamada K;Avolio F;Barton GJ;Lamond AI
There are two main classes of small nucleolar RNAs (snoRNAs): the box C/D snoRNAs and the box H/ACA snoRNAs that function as guide RNAs to direct sequence-specific modification of rRNA precursors and other nucleolar RNA targets. A previous computational and biochemical analysis revealed a possible evolutionary relationship between miRNA precursors and some box H/ACA snoRNAs. Here, we investigate a similar evolutionary relationship between a subset of miRNA precursors and box C/D snoRNAs. Computational analyses identified 84 intronic miRNAs that are encoded within either box C/D snoRNAs, or in precursors showing similarity to box C/D snoRNAs. Predictions of the folded structures of these box C/D snoRNA-like miRNA precursors resemble the structures of known box C/D snoRNAs, with the boxes C and D often in close proximity in the folded molecule. All five box C/D snoRNA-like miRNA precursors tested (miR-27b, miR-16-1, mir-28, miR-31 and let-7g) bind to fibrillarin, a specific protein component of functional box C/D snoRNP complexes. The data suggest that a subset of small regulatory RNAs may have evolved from box C/D snoRNAs.
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通讯作者:
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