Structural and Functional Analysis of DDX41: a bispecific immune receptor for DNA and cyclic dinucleotide.
Structural and Functional Analysis of DDX41: a bispecific immune receptor for DNA and cyclic dinucleotide.
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DDX41的结构和功能分析:DNA和环状二核苷酸的双特异性免疫受体。
DOI:
10.1038/srep34756
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发表时间:
2016-10-10
影响因子:
4.6
通讯作者:
Nureki O
中科院分区:
文献类型:
--
作者:
Omura H;Oikawa D;Nakane T;Kato M;Ishii R;Ishitani R;Tokunaga F;Nureki O
In the innate immune system, pattern recognition receptors (PRRs) specifically recognize ligands derived from bacteria or viruses, to trigger the responsible downstream pathways. DEAD box protein 41 (DDX41) is an intracellular PRR that triggers the downstream pathway involving the adapter STING, the kinase TBK1, and the transcription factor IRF3, to activate the type I interferon response. DDX41 is unique in that it recognizes two different ligands; i.e., double-stranded DNA (dsDNA) and cyclic dinucleotides (CDN), via its DEAD domain. However, the structural basis for the ligand recognition by the DDX41 DEAD domain has remained elusive. Here, we report two crystal structures of the DDX41 DEAD domain in apo forms, at 1.5 and 2.2 Å resolutions. A comparison of the two crystal structures revealed the flexibility in the ATP binding site, suggesting its formation upon ATP binding. Structure-guided functional analyses in vitro and in vivo demonstrated the overlapped binding surface for dsDNA and CDN, which is distinct from the ATP-binding site. We propose that the structural rearrangement of the ATP binding site is crucial for the release of ADP, enabling the fast turnover of DDX41 for the dsDNA/CDN-induced STING activation pathway.
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DOI:
10.1084/jem.189.11.1777
发表时间:
1999-06-07
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Shimazu R;Akashi S;Ogata H;Nagai Y;Fukudome K;Miyake K;Kimoto M
通讯作者:
Kimoto M
影响因子:
30.5
作者:
通讯作者:
--
影响因子:
3.7
作者:
Schutz, Patrick;Karlberg, Tobias;Schuler, Herwig
通讯作者:
Schuler, Herwig
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
7.7
作者:
Laessig, Charlotte;Matheisl, Sarah;Hopfner, Karl-Peter
通讯作者:
Hopfner, Karl-Peter