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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9hr6 | |||||||||||||||||||||||||||
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| タイトル | cryoEM structure of amyloid fibrils formed by human RIPK1 | |||||||||||||||||||||||||||
要素 | Receptor-interacting serine/threonine-protein kinase 1 | |||||||||||||||||||||||||||
キーワード | PROTEIN FIBRIL / Amyloid / kinase | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報ripoptosome assembly / positive regulation of miRNA processing / positive regulation of interleukin-6-mediated signaling pathway / death domain binding / ripoptosome assembly involved in necroptotic process / T cell apoptotic process / programmed necrotic cell death / Defective RIPK1-mediated regulated necrosis / Microbial modulation of RIPK1-mediated regulated necrosis / TRIF-mediated programmed cell death ...ripoptosome assembly / positive regulation of miRNA processing / positive regulation of interleukin-6-mediated signaling pathway / death domain binding / ripoptosome assembly involved in necroptotic process / T cell apoptotic process / programmed necrotic cell death / Defective RIPK1-mediated regulated necrosis / Microbial modulation of RIPK1-mediated regulated necrosis / TRIF-mediated programmed cell death / ripoptosome / Regulation by c-FLIP / CASP8 activity is inhibited / Dimerization of procaspase-8 / TLR3-mediated TICAM1-dependent programmed cell death / activation of protein kinase activity / positive regulation of macrophage differentiation / TNF signaling / Caspase activation via Death Receptors in the presence of ligand / SARS-CoV-1-mediated effects on programmed cell death / JUN kinase kinase kinase activity / negative regulation of necroptotic process / necroptotic signaling pathway / NF-kB activation through FADD/RIP-1 pathway mediated by caspase-8 and -10 / RIP-mediated NFkB activation via ZBP1 / death-inducing signaling complex / positive regulation of necroptotic process / Dengue virus modulates apoptosis / positive regulation of tumor necrosis factor-mediated signaling pathway / death receptor binding / positive regulation of programmed necrotic cell death / positive regulation of extrinsic apoptotic signaling pathway / TNFR1-induced proapoptotic signaling / positive regulation of programmed cell death / RIPK1-mediated regulated necrosis / necroptotic process / extrinsic apoptotic signaling pathway via death domain receptors / TRP channels / protein serine/threonine phosphatase activity / response to tumor necrosis factor / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of execution phase of apoptosis / extrinsic apoptotic signaling pathway / canonical NF-kappaB signal transduction / signaling adaptor activity / negative regulation of extrinsic apoptotic signaling pathway / negative regulation of canonical NF-kappaB signal transduction / tumor necrosis factor-mediated signaling pathway / positive regulation of interleukin-8 production / TICAM1, RIP1-mediated IKK complex recruitment / protein serine/threonine kinase binding / IKK complex recruitment mediated by RIP1 / intrinsic apoptotic signaling pathway in response to DNA damage / TNFR1-induced NF-kappa-B signaling pathway / cellular response to tumor necrosis factor / Regulation of TNFR1 signaling / positive regulation of non-canonical NF-kappaB signal transduction / cellular response to growth factor stimulus / positive regulation of JNK cascade / Regulation of necroptotic cell death / cellular response to hydrogen peroxide / positive regulation of reactive oxygen species metabolic process / positive regulation of inflammatory response / positive regulation of tumor necrosis factor production / Ovarian tumor domain proteases / positive regulation of neuron apoptotic process / response to oxidative stress / Potential therapeutics for SARS / amyloid fibril formation / positive regulation of canonical NF-kappaB signal transduction / protein kinase activity / non-specific serine/threonine protein kinase / signaling receptor complex / endosome membrane / intracellular signal transduction / Ub-specific processing proteases / positive regulation of apoptotic process / inflammatory response / protein serine kinase activity / protein serine/threonine kinase activity / positive regulation of gene expression / ubiquitin protein ligase binding / apoptotic process / negative regulation of apoptotic process / protein-containing complex binding / positive regulation of transcription by RNA polymerase II / protein homodimerization activity / protein-containing complex / mitochondrion / ATP binding / identical protein binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||||||||||||||||||||
| 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: 2.57 Å | |||||||||||||||||||||||||||
データ登録者 | Lopez-Alonso, J.P. / Ubarretxena-Belandia, I. / Jiang, H. | |||||||||||||||||||||||||||
| 資金援助 | スペイン, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structural basis for amyloid fibril assembly by the master cell-signaling regulator receptor-interacting protein kinase 1. 著者: Paula Polonio / Jorge Pedro López-Alonso / Hanxing Jiang / Sara Andrés-Campos / Fátima C Escobedo-González / Gustavo A Titaux-Delgado / Iban Ubarretxena-Belandia / Miguel Mompeán / ![]() 要旨: Amyloid fibrils can form biologically relevant functional assemblies. The RIP homotypic interaction motifs (RHIMs) in receptor-interacting protein kinases 1 and 3 (RIPK1 and RIPK3) orchestrate the ...Amyloid fibrils can form biologically relevant functional assemblies. The RIP homotypic interaction motifs (RHIMs) in receptor-interacting protein kinases 1 and 3 (RIPK1 and RIPK3) orchestrate the formation of amyloid-like fibrils essential for propagating cell death signals. While the structures of human RIPK3 (hRIPK3) homomeric fibrils and RIPK1-RIPK3 heteromeric fibrils have been elucidated, the atomic structure of human RIPK1 (hRIPK1) homomeric fibrils has remained elusive. We present a high-resolution structure of hRIPK1 RHIM-mediated amyloid fibrils, determined using an integrative approach combining cryoprobe-detected solid-state nuclear magnetic resonance spectroscopy and cryo-electron microscopy. The fibrils adopt an N-shaped fold consisting of three β-sheets stabilized by hydrophobic interactions and hydrogen bonding. A key hydrogen bond between N545 and G542 closes the β2-β3 loop, resulting in denser side-chain packing compared to hRIPK3 homomeric fibrils. These findings provide structural insights into how hRIPK1 homomeric fibrils nucleate hRIPK3 recruitment and fibrillization during necroptosis, offering broader perspectives on the molecular principles governing RHIM-mediated amyloid assembly and functional amyloids. | |||||||||||||||||||||||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 9hr6.cif.gz | 36.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9hr6.ent.gz | 22.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9hr6.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/hr/9hr6 ftp://data.pdbj.org/pub/pdb/validation_reports/hr/9hr6 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 52356MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
| #1: タンパク質 | 分子量: 9656.604 Da / 分子数: 5 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: RIPK1, RIP, RIP1 / プラスミド: pET11a / 発現宿主: ![]() 参照: UniProt: Q13546, non-specific serine/threonine protein kinase 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: HELICAL ARRAY / 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: hRIPK1 RHIM-mediated amyloid fibril / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.5 |
| 緩衝液成分 | 濃度: 50 mM / 名称: TrisHCl |
| 試料 | 濃度: 0.765 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | 詳細: 9 mA / グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K / 詳細: time 5.5s, blotting force 2 |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: TFS KRIOS |
| 電子銃 | 電子線源: LAB6 / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 165000 X / 最大 デフォーカス(公称値): 1600 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 平均露光時間: 0.88 sec. / 電子線照射量: 49.3 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOCONTINUUM (6k x 4k) 撮影したグリッド数: 1 |
| 画像スキャン | 横: 5760 / 縦: 4092 |
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解析
| EMソフトウェア |
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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: -7.319 ° / 軸方向距離/サブユニット: 4.667 Å / らせん対称軸の対称性: C1 | ||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 2814672 | ||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.57 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 460173 / クラス平均像の数: 1 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | B value: 66.05 / プロトコル: FLEXIBLE FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 詳細: ModelAngelo using sequence / Source name: Other / タイプ: in silico model |
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Homo sapiens (ヒト)
スペイン, 1件
引用

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