Structural basis of TLR5-flagellin recognition and signaling.

Structural basis of TLR5-flagellin recognition and signaling.
复制标题

DOI:
10.1126/science.1215584
复制
发表时间:
2012-02-17
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Wilson IA
Wilson IA
中科院分区:
其他
文献类型:
--
作者:
Yoon SI;Kurnasov O;Natarajan V;Hong M;Gudkov AV;Osterman AL;Wilson IA

文献摘要

参考文献

被引文献

相似文献

Toll 样受体 5 (TLR5) 与细菌鞭毛蛋白结合可激活 NF-κB 信号传导并触发针对入侵病原体的先天免疫反应。为了阐明 TLR5-鞭毛蛋白识别的结构基础和机制含义,我们以 2.47 Å 的分辨率确定了斑马鱼 TLR5(作为 VLR 杂合蛋白)与沙门氏菌鞭毛蛋白 D1/D2 片段 FliC 复合的晶体结构。 TLR5 主要利用其侧面与 FliC D1 结构域的三个螺旋相互作用。两个 TLR5-FliC 1:1 异二聚体组装成 2:2 尾对尾信号复合物,该复合物通过 FliC D1 结构域与相对 TLR5 凸面的四元接触来稳定。所提出的信号传导机制得到了对 CBLB502(一种源自 FliC 的治疗蛋白)的结构引导诱变和缺失分析的支持。
Toll-like receptor 5 (TLR5) binding to bacterial flagellin activates NF-κB signaling and triggers an innate immune response to the invading pathogen. To elucidate the structural basis and mechanistic implications of TLR5-flagellin recognition, we determined the crystal structure of zebrafish TLR5, as a VLR-hybrid protein, in complex with the D1/D2 fragment of Salmonella flagellin, FliC, at 2.47 Å resolution. TLR5 interacts primarily with the three helices of the FliC D1 domain using its lateral side. Two TLR5-FliC 1:1 heterodimers assemble into a 2:2 tail-to-tail signaling complex that is stabilized by quaternary contacts of the FliC D1 domain with the convex surface of the opposing TLR5. The proposed signaling mechanism is supported by structure-guided mutagenesis and deletion analysis on CBLB502, a therapeutic protein derived from FliC.
DOI: 10.1038/nsmb.2106
发表时间: 2011-08-21
影响因子: 16.8
作者:
通讯作者: --
DOI: 10.1073/pnas.0502040102
发表时间: 2005-06-28
影响因子: 11.1
作者:
Andersen-Nissen, E;Smith, KD;Aderem, A
通讯作者: Aderem, A
DOI: 10.1126/science.1155406
发表时间: 2008-04-18
期刊: SCIENCE
影响因子: 56.9
作者:
Liu, Lin;Botos, Istvan;Davies, David R.
通讯作者: Davies, David R.
DOI: 10.1038/nature07830
发表时间: 2009-04-30
期刊: NATURE
影响因子: 64.8
作者:
Park, Beom Seok;Song, Dong Hyun;Lee, Jie-Oh
通讯作者: Lee, Jie-Oh
DOI: 10.4049/jimmunol.166.2.1248
发表时间: 2001-01-15
影响因子: 4.4
作者:
Eaves-Pyles, T;Murthy, K;Salzman, AL
通讯作者: Salzman, AL