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基本情報
登録情報 | データベース: PDB / ID: 9dlg | ||||||||||||||||||
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タイトル | CryoEM structure of the TIR domain from human TRAM | ||||||||||||||||||
![]() | TIR domain-containing adapter molecule 2 | ||||||||||||||||||
![]() | IMMUNE SYSTEM / Toll-like receptor / TIR / TRAM | ||||||||||||||||||
機能・相同性 | ![]() TRAM-dependent toll-like receptor 4 signaling pathway / positive regulation of interleukin-18-mediated signaling pathway / negative regulation of chemokine (C-C motif) ligand 5 production / MyD88-independent TLR4 cascade / negative regulation of toll-like receptor 4 signaling pathway / positive regulation of chemokine (C-C motif) ligand 5 production / positive regulation of toll-like receptor 4 signaling pathway / TRIF-mediated programmed cell death / Toll Like Receptor 4 (TLR4) Cascade / Caspase activation via Death Receptors in the presence of ligand ...TRAM-dependent toll-like receptor 4 signaling pathway / positive regulation of interleukin-18-mediated signaling pathway / negative regulation of chemokine (C-C motif) ligand 5 production / MyD88-independent TLR4 cascade / negative regulation of toll-like receptor 4 signaling pathway / positive regulation of chemokine (C-C motif) ligand 5 production / positive regulation of toll-like receptor 4 signaling pathway / TRIF-mediated programmed cell death / Toll Like Receptor 4 (TLR4) Cascade / Caspase activation via Death Receptors in the presence of ligand / TRIF-dependent toll-like receptor signaling pathway / toll-like receptor 4 signaling pathway / positive regulation of type I interferon production / phagocytosis / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / phagocytic cup / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / signaling adaptor activity / IKK complex recruitment mediated by RIP1 / secretory granule membrane / cell projection / late endosome membrane / late endosome / cellular response to lipopolysaccharide / early endosome membrane / molecular adaptor activity / early endosome / endosome membrane / positive regulation of canonical NF-kappaB signal transduction / endosome / inflammatory response / innate immune response / Neutrophil degranulation / endoplasmic reticulum / Golgi apparatus / plasma membrane 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | ![]() | ||||||||||||||||||
手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 5.6 Å | ||||||||||||||||||
![]() | Hedger, A. / Pospich, S. / Pan, M. / Gu, W. / Ve, T. / Raunser, S. / Landsberg, M. / Nanson, J.D. / Kobe, B. | ||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for TIR domain-mediated innate immune signaling by Toll-like receptor adaptors TRIF and TRAM. 著者: Mohammad K Manik / Mengqi Pan / Le Xiao / Weixi Gu / Hyoyoung Kim / Sabrina Pospich / Andrew Hedger / Parimala R Vajjhala / Morris Y L Lee / Xiaoqi Qian / Michael J Landsberg / Thomas Ve / ...著者: Mohammad K Manik / Mengqi Pan / Le Xiao / Weixi Gu / Hyoyoung Kim / Sabrina Pospich / Andrew Hedger / Parimala R Vajjhala / Morris Y L Lee / Xiaoqi Qian / Michael J Landsberg / Thomas Ve / Jeffrey D Nanson / Stefan Raunser / Katryn J Stacey / Hao Wu / Bostjan Kobe / ![]() ![]() ![]() 要旨: Innate immunity relies on Toll-like receptors (TLRs) to detect pathogen-associated molecular patterns. The TIR (Toll/interleukin-1 receptor) domain-containing TLR adaptors TRIF (TIR domain-containing ...Innate immunity relies on Toll-like receptors (TLRs) to detect pathogen-associated molecular patterns. The TIR (Toll/interleukin-1 receptor) domain-containing TLR adaptors TRIF (TIR domain-containing adaptor-inducing interferon-β) and TRAM (TRIF-related adaptor molecule) are essential for MyD88-independent TLR signaling. However, the structural basis of TRIF and TRAM TIR domain-based signaling remains unclear. Here, we present cryo-EM structures of filaments formed by TRIF and TRAM TIR domains at resolutions of 3.3 Å and 5.6 Å, respectively. Both structures reveal two-stranded parallel helical arrangements. Functional studies underscore the importance of intrastrand interactions, mediated by the BB-loop, and interstrand interactions in TLR4-mediated signaling. We also report the crystal structure of the monomeric TRAM TIR domain bearing the BB loop mutation C117H, which reveals conformational differences consistent with its inactivity. Our findings suggest a unified signaling mechanism by the TIR domains of the four signaling TLR adaptors MyD88, MAL, TRIF, and TRAM and reveal potential therapeutic targets for immunity-related disorders. | ||||||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 319.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 220.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 877.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 879.8 KB | 表示 | |
XML形式データ | ![]() | 29.9 KB | 表示 | |
CIF形式データ | ![]() | 38.9 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域: Component-ID: 1 / Ens-ID: ens_1 / Beg auth comp-ID: VAL / Beg label comp-ID: VAL / End auth comp-ID: ARG / End label comp-ID: ARG / Auth seq-ID: 77 - 231 / Label seq-ID: 2 - 156
NCS oper:
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要素
#1: タンパク質 | 分子量: 18350.752 Da / 分子数: 5 / 断片: TIR domain / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() Has protein modification | N | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: FILAMENT / 3次元再構成法: らせん対称体再構成法 |
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試料調製
構成要素 | 名称: Self-assembly of TIR domain of TRIF-related adaptor protein (TRAM) タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 50000 nm / 最小 デフォーカス(公称値): 3000 nm |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / バージョン: 1.21.1_5286 / カテゴリ: モデル精密化 | |||||||||||||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: 177.9 ° / 軸方向距離/サブユニット: 16.11 Å / らせん対称軸の対称性: C1 | |||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 5.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 95000 / 対称性のタイプ: HELICAL | |||||||||||||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | |||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 283.85 Å2 | |||||||||||||||||||||||||||||||||||
拘束条件 |
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Refine LS restraints NCS |
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