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基本情報
登録情報 | データベース: EMDB / ID: EMD-22233 | |||||||||
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タイトル | Cryo-EM structure of ASC-Caspase1 Octamer | |||||||||
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機能・相同性 | ![]() Pyrin domain binding / NLRP6 inflammasome complex / myosin I binding / positive regulation of antigen processing and presentation of peptide antigen via MHC class II / myeloid dendritic cell activation involved in immune response / regulation of intrinsic apoptotic signaling pathway / caspase-1 / protease inhibitor complex / myeloid dendritic cell activation / AIM2 inflammasome complex assembly ...Pyrin domain binding / NLRP6 inflammasome complex / myosin I binding / positive regulation of antigen processing and presentation of peptide antigen via MHC class II / myeloid dendritic cell activation involved in immune response / regulation of intrinsic apoptotic signaling pathway / caspase-1 / protease inhibitor complex / myeloid dendritic cell activation / AIM2 inflammasome complex assembly / IkappaB kinase complex / The AIM2 inflammasome / AIM2 inflammasome complex / IPAF inflammasome complex / macropinocytosis / negative regulation of protein serine/threonine kinase activity / The IPAF inflammasome / icosanoid biosynthetic process / NLRP1 inflammasome complex / canonical inflammasome complex / interleukin-6 receptor binding / cytokine precursor processing / positive regulation of adaptive immune response / positive regulation of interleukin-18 production / NLRP3 inflammasome complex assembly / BMP receptor binding / CARD domain binding / NLRP3 inflammasome complex / cysteine-type endopeptidase activator activity / negative regulation of interferon-beta production / CLEC7A/inflammasome pathway / osmosensory signaling pathway / Interleukin-1 processing / regulation of tumor necrosis factor-mediated signaling pathway / positive regulation of tumor necrosis factor-mediated signaling pathway / Interleukin-37 signaling / positive regulation of extrinsic apoptotic signaling pathway / pattern recognition receptor signaling pathway / cysteine-type endopeptidase activator activity involved in apoptotic process / positive regulation of macrophage cytokine production / positive regulation of actin filament polymerization / signaling receptor ligand precursor processing / TP53 Regulates Transcription of Caspase Activators and Caspases / pattern recognition receptor activity / tropomyosin binding / pyroptotic inflammatory response / cytokine binding / negative regulation of NF-kappaB transcription factor activity / positive regulation of activated T cell proliferation / positive regulation of release of cytochrome c from mitochondria / protein autoprocessing / intrinsic apoptotic signaling pathway by p53 class mediator / positive regulation of interleukin-10 production / The NLRP3 inflammasome / cellular response to interleukin-1 / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / Pyroptosis / positive regulation of T cell migration / Purinergic signaling in leishmaniasis infection / positive regulation of phagocytosis / positive regulation of chemokine production / tumor necrosis factor-mediated signaling pathway / negative regulation of canonical NF-kappaB signal transduction / positive regulation of defense response to virus by host / negative regulation of cytokine production involved in inflammatory response / activation of innate immune response / intrinsic apoptotic signaling pathway / protein maturation / positive regulation of DNA-binding transcription factor activity / positive regulation of interleukin-1 beta production / positive regulation of interleukin-8 production / positive regulation of JNK cascade / apoptotic signaling pathway / positive regulation of non-canonical NF-kappaB signal transduction / NOD1/2 Signaling Pathway / regulation of protein stability / protein homooligomerization / cellular response to type II interferon / positive regulation of interleukin-6 production / positive regulation of T cell activation / kinase binding / positive regulation of type II interferon production / cellular response to mechanical stimulus / positive regulation of inflammatory response / positive regulation of NF-kappaB transcription factor activity / positive regulation of tumor necrosis factor production / SARS-CoV-1 activates/modulates innate immune responses / azurophil granule lumen / cellular response to tumor necrosis factor / cellular response to lipopolysaccharide / protease binding / regulation of inflammatory response / defense response to Gram-negative bacterium / secretory granule lumen / regulation of apoptotic process / endopeptidase activity / defense response to virus / microtubule / transmembrane transporter binding / positive regulation of canonical NF-kappaB signal transduction 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 5.0 Å | |||||||||
![]() | Hollingsworth LR / David L / Li Y / Ruan J / Wu H | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Mechanism of filament formation in UPA-promoted CARD8 and NLRP1 inflammasomes. 著者: L Robert Hollingsworth / Liron David / Yang Li / Andrew R Griswold / Jianbin Ruan / Humayun Sharif / Pietro Fontana / Elizabeth L Orth-He / Tian-Min Fu / Daniel A Bachovchin / Hao Wu / ![]() 要旨: NLRP1 and CARD8 are related cytosolic sensors that upon activation form supramolecular signalling complexes known as canonical inflammasomes, resulting in caspase-1 activation, cytokine maturation ...NLRP1 and CARD8 are related cytosolic sensors that upon activation form supramolecular signalling complexes known as canonical inflammasomes, resulting in caspase-1 activation, cytokine maturation and/or pyroptotic cell death. NLRP1 and CARD8 use their C-terminal (CT) fragments containing a caspase recruitment domain (CARD) and the UPA (conserved in UNC5, PIDD, and ankyrins) subdomain for self-oligomerization, which in turn form the platform to recruit the inflammasome adaptor ASC (apoptosis-associated speck-like protein containing a CARD) or caspase-1, respectively. Here, we report cryo-EM structures of NLRP1-CT and CARD8-CT assemblies, in which the respective CARDs form central helical filaments that are promoted by oligomerized, but flexibly linked, UPAs surrounding the filaments. Through biochemical and cellular approaches, we demonstrate that the UPA itself reduces the threshold needed for NLRP1-CT and CARD8-CT filament formation and signalling. Structural analyses provide insights on the mode of ASC recruitment by NLRP1-CT and the contrasting direct recruitment of caspase-1 by CARD8-CT. We also discover that subunits in the central NLRP1 filament dimerize with additional exterior CARDs, which roughly doubles its thickness and is unique among all known CARD filaments. Finally, we engineer and determine the structure of an ASC-caspase-1 octamer, which suggests that ASC uses opposing surfaces for NLRP1, versus caspase-1, recruitment. Together these structures capture the architecture and specificity of the active NLRP1 and CARD8 inflammasomes in addition to key heteromeric CARD-CARD interactions governing inflammasome signalling. | |||||||||
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
-EMDBアーカイブ
マップデータ | ![]() | 652.2 KB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 11.5 KB 11.5 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 4.4 KB | 表示 | ![]() |
画像 | ![]() | 80 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 7keuMC ![]() 6xkjC ![]() 6xkkC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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類似構造データ | |
電子顕微鏡画像生データ | ![]() Data #1: Unaligned multi-frame micrographs for the ASC-CASP1 CARD octamer [micrographs - multiframe]) |
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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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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.65 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 : Cryo-EM structure of ASC-Caspase1 Octamer
全体 | 名称: Cryo-EM structure of ASC-Caspase1 Octamer |
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要素 |
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-超分子 #1: Cryo-EM structure of ASC-Caspase1 Octamer
超分子 | 名称: Cryo-EM structure of ASC-Caspase1 Octamer / タイプ: complex / ID: 1 / 親要素: 0 詳細: A complex of ASC-CARD tetramer and Caspase1-CARD tetramer |
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由来(天然) | 生物種: ![]() |
組換発現 | 生物種: ![]() ![]() |
分子量 | 実験値: 86.3 KDa |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 1 mg/mL | ||||||||||||
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緩衝液 | pH: 7.5 構成要素:
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グリッド | 詳細: unspecified | ||||||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277.15 K / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
顕微鏡 | FEI TALOS ARCTICA |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 検出モード: COUNTING / 撮影したグリッド数: 1 / 実像数: 1606 / 平均電子線量: 58.0 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |