An expanded class of histidine-accepting viral tRNA-like structures.
An expanded class of histidine-accepting viral tRNA-like structures.
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一类扩展的组氨酸接受病毒tRNA样结构。
DOI:
10.1261/rna.078550.120
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发表时间:
2021-06
期刊:
影响因子:
--
通讯作者:
Kieft JS
中科院分区:
文献类型:
--
作者:
Langeberg CJ;Sherlock ME;MacFadden A;Kieft JS
Structured RNA elements are common in the genomes of RNA viruses, often playing critical roles during viral infection. Some viral RNA elements use forms of tRNA mimicry, but the diverse ways this mimicry can be achieved are poorly understood. Histidine-accepting tRNA-like structures (TLSHis) are examples found at the 3′ termini of some positive-sense single-stranded RNA (+ssRNA) viruses where they interact with several host proteins, induce histidylation of the RNA genome, and facilitate processes important for infection, to include genome replication. As only five TLSHis examples had been reported, we explored the possible larger phylogenetic distribution and diversity of this TLS class using bioinformatic approaches. We identified many new examples of TLSHis, yielding a rigorous consensus sequence and secondary structure model that we validated by chemical probing of representative TLSHis RNAs. We confirmed new examples as authentic TLSHis by demonstrating their ability to be histidylated in vitro, then used mutational analyses to imply a tertiary interaction that is likely analogous to the D- and T-loop interaction found in canonical tRNAs. These results expand our understanding of how diverse RNA sequences achieve tRNA-like structure and function in the context of viral RNA genomes and lay the groundwork for high-resolution structural studies of tRNA mimicry by histidine-accepting TLSs.
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影响因子:
16.6
作者:
Hartwick EW;Costantino DA;MacFadden A;Nix JC;Tian S;Das R;Kieft JS
通讯作者:
Kieft JS
影响因子:
2.9
作者:
DREHER, TW;TSAI, CH;GIEGE, R
通讯作者:
GIEGE, R
影响因子:
14.9
作者:
Du, X;Wang, ED
通讯作者:
Wang, ED
DOI:
10.1099/jgv.0.000884
发表时间:
2017-08
期刊:
The Journal of general virology
影响因子:
--
作者:
Adams MJ;Adkins S;Bragard C;Gilmer D;Li D;MacFarlane SA;Wong SM;Melcher U;Ratti C;Ryu KH;Ictv Report Consortium
通讯作者:
Ictv Report Consortium
影响因子:
5.6
作者:
FELDEN, B;FLORENTZ, C;WESTHOF, E
通讯作者:
WESTHOF, E