The RNA-binding domain of influenzavirus non-structural protein-1 cooperatively binds to virus-specific RNA sequences in a structure-dependent manner.
The RNA-binding domain of influenzavirus non-structural protein-1 cooperatively binds to virus-specific RNA sequences in a structure-dependent manner.
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流感蛋白1的RNA结合结构域以结构依赖性的方式合作与病毒特异性RNA序列结合。
DOI:
10.1093/nar/gks979
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发表时间:
2013-01-07
影响因子:
14.9
通讯作者:
Soubieux D
中科院分区:
文献类型:
--
作者:
Marc D;Barbachou S;Soubieux D
Influenzavirus non-structural protein NS1 is involved in several steps of the virus replication cycle. It counteracts the interferon response, and also exhibits other activities towards viral and cellular RNAs. NS1 is known to bind non-specifically to double-stranded RNA (dsRNA) as well as to viral and cellular RNAs. We set out to search whether NS1 could preferentially bind sequence-specific RNA patterns, and performed an in vitro selection (SELEX) to isolate NS1-specific aptamers from a pool of 80-nucleotide(nt)-long RNAs. Among the 63 aptamers characterized, two families were found to harbour a sequence that is strictly conserved at the 5′ terminus of all positive-strand RNAs of influenzaviruses A. We found a second virus-specific motif, a 9 nucleotide sequence located 15 nucleotides downstream from NS1’s stop codon. In addition, a majority of aptamers had one or two symmetrically positioned copies of the 5′-GUAAC / 3′-CUUAG double-stranded motif, which closely resembles the canonical 5′-splice site. Through an in-depth analysis of the interaction combining fluorimetry and gel-shift assays, we showed that NS1’s RNA-binding domain (RBD) specifically recognizes sequence patterns in a structure-dependent manner, resulting in an intimate interaction with high affinity (low nanomolar to subnanomolar KD values) that leads to oligomerization of the RBD on its RNA ligands.
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DOI:
10.1126/science.1162327
发表时间:
2009-06-26
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Badis G;Berger MF;Philippakis AA;Talukder S;Gehrke AR;Jaeger SA;Chan ET;Metzler G;Vedenko A;Chen X;Kuznetsov H;Wang CF;Coburn D;Newburger DE;Morris Q;Hughes TR;Bulyk ML
通讯作者:
Bulyk ML
影响因子:
44.1
作者:
Cheng, Ao;Wong, Sek Man;Yuan, Y. Adam
通讯作者:
Yuan, Y. Adam
影响因子:
5.4
作者:
Egorov, A;Brandt, S;Muster, T
通讯作者:
Muster, T
影响因子:
2.7
作者:
Hoon, Shawn;Zhou, Bin;Scolnick, Jonathan
通讯作者:
Scolnick, Jonathan
影响因子:
5.4
作者:
Donelan, NR;Basler, CF;García-Sastre, A
通讯作者:
García-Sastre, A