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基本情報
登録情報 | データベース: EMDB / ID: EMD-8300 | |||||||||
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タイトル | Cryo-EM structure of Casp-8 tDED filament (CASP target) | |||||||||
![]() | Casp-8 tDED filament | |||||||||
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機能・相同性 | ![]() caspase-8 / death effector domain binding / syncytiotrophoblast cell differentiation involved in labyrinthine layer development / FasL/ CD95L signaling / TRAIL signaling / CD95 death-inducing signaling complex / ripoptosome / TRAIL-activated apoptotic signaling pathway / Defective RIPK1-mediated regulated necrosis / Apoptotic execution phase ...caspase-8 / death effector domain binding / syncytiotrophoblast cell differentiation involved in labyrinthine layer development / FasL/ CD95L signaling / TRAIL signaling / CD95 death-inducing signaling complex / ripoptosome / TRAIL-activated apoptotic signaling pathway / Defective RIPK1-mediated regulated necrosis / Apoptotic execution phase / Activation, myristolyation of BID and translocation to mitochondria / TRIF-mediated programmed cell death / TLR3-mediated TICAM1-dependent programmed cell death / Microbial modulation of RIPK1-mediated regulated necrosis / Regulation by c-FLIP / CASP8 activity is inhibited / Dimerization of procaspase-8 / Caspase activation via Death Receptors in the presence of ligand / positive regulation of macrophage differentiation / self proteolysis / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / response to cobalt ion / cysteine-type endopeptidase activity involved in apoptotic signaling pathway / death-inducing signaling complex / CLEC7A/inflammasome pathway / natural killer cell activation / negative regulation of necroptotic process / activation of cysteine-type endopeptidase activity / regulation of tumor necrosis factor-mediated signaling pathway / tumor necrosis factor receptor binding / death receptor binding / cysteine-type endopeptidase activity involved in apoptotic process / TNFR1-induced proapoptotic signaling / execution phase of apoptosis / RIPK1-mediated regulated necrosis / B cell activation / regulation of innate immune response / Apoptotic cleavage of cellular proteins / pyroptotic inflammatory response / positive regulation of proteolysis / macrophage differentiation / protein maturation / cellular response to organic cyclic compound / extrinsic apoptotic signaling pathway via death domain receptors / Caspase-mediated cleavage of cytoskeletal proteins / response to tumor necrosis factor / extrinsic apoptotic signaling pathway / negative regulation of canonical NF-kappaB signal transduction / cysteine-type peptidase activity / regulation of cytokine production / T cell activation / proteolysis involved in protein catabolic process / positive regulation of interleukin-1 beta production / Regulation of NF-kappa B signaling / apoptotic signaling pathway / Regulation of TNFR1 signaling / NOD1/2 Signaling Pathway / Regulation of necroptotic cell death / cellular response to mechanical stimulus / positive regulation of neuron apoptotic process / lamellipodium / response to estradiol / peptidase activity / heart development / cell body / scaffold protein binding / angiogenesis / positive regulation of canonical NF-kappaB signal transduction / response to ethanol / mitochondrial outer membrane / response to lipopolysaccharide / cytoskeleton / positive regulation of cell migration / positive regulation of apoptotic process / cysteine-type endopeptidase activity / apoptotic process / ubiquitin protein ligase binding / protein-containing complex binding / protein-containing complex / mitochondrion / proteolysis / nucleoplasm / identical protein binding / cytoplasm / cytosol 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: 4.6 Å | |||||||||
![]() | Fu TM / Li Y / Wu H | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Cryo-EM Structure of Caspase-8 Tandem DED Filament Reveals Assembly and Regulation Mechanisms of the Death-Inducing Signaling Complex. 著者: Tian-Min Fu / Yang Li / Alvin Lu / Zongli Li / Parimala R Vajjhala / Anthony C Cruz / Devendra B Srivastava / Frank DiMaio / Pawel A Penczek / Richard M Siegel / Katryn J Stacey / Edward H Egelman / Hao Wu / ![]() ![]() 要旨: Caspase-8 activation can be triggered by death receptor-mediated formation of the death-inducing signaling complex (DISC) and by the inflammasome adaptor ASC. Caspase-8 assembles with FADD at the ...Caspase-8 activation can be triggered by death receptor-mediated formation of the death-inducing signaling complex (DISC) and by the inflammasome adaptor ASC. Caspase-8 assembles with FADD at the DISC and with ASC at the inflammasome through its tandem death effector domain (tDED), which is regulated by the tDED-containing cellular inhibitor cFLIP and the viral inhibitor MC159. Here we present the caspase-8 tDED filament structure determined by cryoelectron microscopy. Extensive assembly interfaces not predicted by the previously proposed linear DED chain model were uncovered, and were further confirmed by structure-based mutagenesis in filament formation in vitro and Fas-induced apoptosis and ASC-mediated caspase-8 recruitment in cells. Structurally, the two DEDs in caspase-8 use quasi-equivalent contacts to enable assembly. Using the tDED filament structure as a template, structural analyses reveal the interaction surfaces between FADD and caspase-8 and the distinct mechanisms of regulation by cFLIP and MC159 through comingling and capping, respectively. | |||||||||
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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マップデータ | ![]() | 5.1 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 10.2 KB 10.2 KB | 表示 表示 | ![]() |
画像 | ![]() | 126.3 KB | ||
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-検証レポート
文書・要旨 | ![]() | 528.7 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 528.2 KB | 表示 | |
XML形式データ | ![]() | 4.9 KB | 表示 | |
CIF形式データ | ![]() | 5.4 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
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 | Casp-8 tDED 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: 0.62 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 : Caspase-8
全体 | 名称: Caspase-8 |
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要素 |
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-超分子 #1: Caspase-8
超分子 | 名称: Caspase-8 / 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: Caspase-8
分子 | 名称: Caspase-8 / タイプ: protein_or_peptide / ID: 1 / 光学異性体: LEVO / EC番号: caspase-8 |
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由来(天然) | 生物種: ![]() |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MDFSRNLYDI GEQLDSEDL A SLKFLSLD YI PQRKQEP IKD ALMLFQ RLQEKRMLEE SNLS FLKEL LFRIN RLDL LITYLNTRKE EMEREL QTP GRAQISAYRV MLYQISE EV SRSELRSF K FLLQEEISK CKLDDDMNLL DIFIEMEKR V ILGEGKLD ...文字列: MDFSRNLYDI GEQLDSEDL A SLKFLSLD YI PQRKQEP IKD ALMLFQ RLQEKRMLEE SNLS FLKEL LFRIN RLDL LITYLNTRKE EMEREL QTP GRAQISAYRV MLYQISE EV SRSELRSF K FLLQEEISK CKLDDDMNLL DIFIEMEKR V ILGEGKLD IL KRVCAQI NKS LLKIIN DYEE FSKE UniProtKB: Caspase-8 |
-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
濃度 | 0.2 mg/mL | ||||||
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緩衝液 | pH: 7.5 構成要素:
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凍結 | 凍結剤: OTHER / 詳細: cryogen not identified. |
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電子顕微鏡法
顕微鏡 | FEI TECNAI F20 |
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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: SUPER-RESOLUTION / 平均電子線量: 31.0 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 |
試料ステージ | 試料ホルダーモデル: GATAN CT3500 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Tecnai F20 / 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: 27.1 Å 想定した対称性 - らせんパラメータ - ΔΦ: 99.4 ° 想定した対称性 - らせんパラメータ - 軸対称性: C1 (非対称) 解像度のタイプ: BY AUTHOR / 解像度: 4.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 33969 |
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初期モデル | モデルのタイプ: INSILICO MODEL |
最終 角度割当 | タイプ: NOT APPLICABLE |
-原子モデル構築 1
精密化 | プロトコル: RIGID BODY FIT |
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得られたモデル | ![]() PDB-5l08: |