Detection of 3'-end RNA uridylation with a protein nanopore.
Detection of 3'-end RNA uridylation with a protein nanopore.
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DOI:
10.1021/nn4050479
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发表时间:
2014-02-25
期刊:
影响因子:
17.1
通讯作者:
Bayley H
中科院分区:
文献类型:
--
作者:
Clamer M;Höfler L;Mikhailova E;Viero G;Bayley H
Post-transcriptional modifications of the 3′-ends of RNA molecules have a profound impact on their stability and processing in the cell. Uridylation, the addition of uridines to 3′-ends, has recently been found to be an important regulatory signal to stabilize the tagged molecules or to direct them towards degradation. Simple and cost-effective methods for the detection of this post-transcriptional modification are not yet available. Here, we demonstrate the selective and transient binding of 3′-uridylated ssRNAs inside the β barrel of the staphylococcal alpha-hemolysin (αHL) nanopore, and investigate the molecular basis of uridine recognition by the pore. We show the discrimination of 3′-oligouridine tails on the basis of their lengths and propose the αHL nanopore as a useful sensor for this biologically relevant RNA modification.
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DOI:
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DOI:
10.1073/pnas.91.26.12828
发表时间:
1994-12-20
影响因子:
11.1
作者:
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通讯作者:
BAYLEY, H