Crystal structure of RIG-I C-terminal domain bound to blunt-ended double-strand RNA without 5' triphosphate.
Crystal structure of RIG-I C-terminal domain bound to blunt-ended double-strand RNA without 5' triphosphate.
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DOI:
10.1093/nar/gkq974
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发表时间:
2011-03
影响因子:
14.9
通讯作者:
Li P
中科院分区:
文献类型:
--
作者:
Lu C;Ranjith-Kumar CT;Hao L;Kao CC;Li P
RIG-I recognizes molecular patterns in viral RNA to regulate the induction of type I interferons. The C-terminal domain (CTD) of RIG-I exhibits high affinity for 5′ triphosphate (ppp) dsRNA as well as blunt-ended dsRNA. Structures of RIG-I CTD bound to 5′-ppp dsRNA showed that RIG-I recognizes the termini of dsRNA and interacts with the ppp through electrostatic interactions. However, the structural basis for the recognition of non-phosphorylated dsRNA by RIG-I is not fully understood. Here, we show that RIG-I CTD binds blunt-ended dsRNA in a different orientation compared to 5′ ppp dsRNA and interacts with both strands of the dsRNA. Overlapping sets of residues are involved in the recognition of blunt-ended dsRNA and 5′ ppp dsRNA. Mutations at the RNA-binding surface affect RNA binding and signaling by RIG-I. These results provide the mechanistic basis for how RIG-I recognizes different RNA ligands.
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影响因子:
14.9
作者:
Pippig DA;Hellmuth JC;Cui S;Kirchhofer A;Lammens K;Lammens A;Schmidt A;Rothenfusser S;Hopfner KP
通讯作者:
Hopfner KP
影响因子:
3.9
作者:
Li, Xiaojun;Lu, Cheng;Li, Pingwei
通讯作者:
Li, Pingwei
影响因子:
56.9
作者:
Pichlmair, Andreas;Schulz, Oliver;Sousa, Caetano Reis E.
通讯作者:
Sousa, Caetano Reis E.
DOI:
10.1073/pnas.0912986107
发表时间:
2010-01-26
影响因子:
11.1
作者:
Satoh, Takashi;Kato, Hiroki;Takeuchi, Osamu
通讯作者:
Takeuchi, Osamu
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL