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基本情報
登録情報 | データベース: EMDB / ID: EMD-8625 | |||||||||
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タイトル | Cryo-EM structure of the MAL TIR domain filament | |||||||||
![]() | Cryo-EM structure of the MAL TIR domain filament | |||||||||
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![]() | TIR domain / adaptor proteins / TLR signaling / homotypic protein interactions / IMMUNE SYSTEM | |||||||||
機能・相同性 | ![]() positive regulation of interleukin-15 production / TIRAP-dependent toll-like receptor 4 signaling pathway / cellular response to bacterial lipopeptide / regulation of interferon-beta production / positive regulation of toll-like receptor 3 signaling pathway / positive regulation of toll-like receptor 2 signaling pathway / Toll-like receptor 4 binding / Toll-like receptor 2 binding / positive regulation of toll-like receptor 4 signaling pathway / positive regulation of chemokine (C-X-C motif) ligand 1 production ...positive regulation of interleukin-15 production / TIRAP-dependent toll-like receptor 4 signaling pathway / cellular response to bacterial lipopeptide / regulation of interferon-beta production / positive regulation of toll-like receptor 3 signaling pathway / positive regulation of toll-like receptor 2 signaling pathway / Toll-like receptor 4 binding / Toll-like receptor 2 binding / positive regulation of toll-like receptor 4 signaling pathway / positive regulation of chemokine (C-X-C motif) ligand 1 production / myeloid cell differentiation / MyD88 deficiency (TLR2/4) / positive regulation of chemokine (C-X-C motif) ligand 2 production / extrinsic component of cytoplasmic side of plasma membrane / positive regulation of neutrophil chemotaxis / IRAK4 deficiency (TLR2/4) / MyD88-dependent toll-like receptor signaling pathway / 3'-UTR-mediated mRNA stabilization / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / toll-like receptor 4 signaling pathway / regulation of innate immune response / cellular response to lipoteichoic acid / endocytic vesicle / signaling adaptor activity / positive regulation of B cell proliferation / phosphatidylinositol-4,5-bisphosphate binding / positive regulation of interleukin-12 production / protein kinase C binding / positive regulation of interleukin-8 production / positive regulation of JNK cascade / positive regulation of protein-containing complex assembly / positive regulation of interleukin-6 production / ruffle membrane / positive regulation of NF-kappaB transcription factor activity / positive regulation of tumor necrosis factor production / ER-Phagosome pathway / protein-macromolecule adaptor activity / molecular adaptor activity / response to lipopolysaccharide / positive regulation of canonical NF-kappaB signal transduction / cell surface receptor signaling pathway / positive regulation of ERK1 and ERK2 cascade / defense response to Gram-positive bacterium / inflammatory response / innate immune response / cell surface / identical protein binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 7.0 Å | |||||||||
![]() | Ve T / Vajjhala PR | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of TIR-domain-assembly formation in MAL- and MyD88-dependent TLR4 signaling. 著者: Thomas Ve / Parimala R Vajjhala / Andrew Hedger / Tristan Croll / Frank DiMaio / Shane Horsefield / Xiong Yu / Peter Lavrencic / Zahid Hassan / Garry P Morgan / Ashley Mansell / Mehdi Mobli / ...著者: Thomas Ve / Parimala R Vajjhala / Andrew Hedger / Tristan Croll / Frank DiMaio / Shane Horsefield / Xiong Yu / Peter Lavrencic / Zahid Hassan / Garry P Morgan / Ashley Mansell / Mehdi Mobli / Ailis O'Carroll / Brieuc Chauvin / Yann Gambin / Emma Sierecki / Michael J Landsberg / Katryn J Stacey / Edward H Egelman / Bostjan Kobe / ![]() ![]() 要旨: Toll-like receptor (TLR) signaling is a key innate immunity response to pathogens. Recruitment of signaling adapters such as MAL (TIRAP) and MyD88 to the TLRs requires Toll/interleukin-1 receptor ...Toll-like receptor (TLR) signaling is a key innate immunity response to pathogens. Recruitment of signaling adapters such as MAL (TIRAP) and MyD88 to the TLRs requires Toll/interleukin-1 receptor (TIR)-domain interactions, which remain structurally elusive. Here we show that MAL TIR domains spontaneously and reversibly form filaments in vitro. They also form cofilaments with TLR4 TIR domains and induce formation of MyD88 assemblies. A 7-Å-resolution cryo-EM structure reveals a stable MAL protofilament consisting of two parallel strands of TIR-domain subunits in a BB-loop-mediated head-to-tail arrangement. Interface residues that are important for the interaction are conserved among different TIR domains. Although large filaments of TLR4, MAL or MyD88 are unlikely to form during cellular signaling, structure-guided mutagenesis, combined with in vivo interaction assays, demonstrated that the MAL interactions defined within the filament represent a template for a conserved mode of TIR-domain interaction involved in both TLR and interleukin-1 receptor signaling. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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ダウンロードとリンク
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マップデータ | ![]() | 5.9 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 10.3 KB 10.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 77.8 KB | ||
Filedesc metadata | ![]() | 5.2 KB | ||
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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Cryo-EM structure of the MAL TIR domain filament | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 これらの図は立方格子座標系で作成されたものです | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.07 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : MAL TIR domain filament
全体 | 名称: MAL TIR domain filament |
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要素 |
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-超分子 #1: MAL TIR domain filament
超分子 | 名称: MAL TIR domain filament / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: ![]() |
-分子 #1: Toll/interleukin-1 receptor domain-containing adapter protein
分子 | 名称: Toll/interleukin-1 receptor domain-containing adapter protein タイプ: protein_or_peptide / ID: 1 / コピー数: 14 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 19.689162 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MHHHHHHSSG VDLGTENLYF QSNAEQKLIS EEDLSSRWSK DYDVCVCHSE EDLVAAQDLV SYLEGSTASL RCFLQLRDAT PGGAIVSEL CQALSSSHCR VLLITPGFLQ DPWCKYQMLQ ALTEAPGAEG CTIPLLSGLS RAAYPPELRF MYYVDGRGPD G GFRQVKEA VMRYLQTLS UniProtKB: Toll/interleukin-1 receptor domain-containing adapter protein |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | らせん対称体再構成法 |
試料の集合状態 | filament |
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試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON II (4k x 4k) 実像数: 446 / 平均電子線量: 20.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
最終 再構成 | 想定した対称性 - らせんパラメータ - Δz: 15.5 Å 想定した対称性 - らせんパラメータ - ΔΦ: -26.8 ° 想定した対称性 - らせんパラメータ - 軸対称性: C6 (6回回転対称) 解像度のタイプ: BY AUTHOR / 解像度: 7.0 Å / 解像度の算出法: OTHER / ソフトウェア: (名称: SPIDER, IHRSR) / 使用した粒子像数: 17175 |
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初期モデル | モデルのタイプ: OTHER |
最終 角度割当 | タイプ: NOT APPLICABLE |