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データを開く
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基本情報
| 登録情報 | ![]() | ||||||||||||
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| タイトル | Full-length ASC-PYD filament | ||||||||||||
マップデータ | |||||||||||||
試料 |
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キーワード | filament / PYD / CARD / IMMUNE SYSTEM | ||||||||||||
| 機能・相同性 | 機能・相同性情報NLRP6 inflammasome complex / myosin I binding / Pyrin domain binding / myeloid dendritic cell activation involved in immune response / positive regulation of antigen processing and presentation of peptide antigen via MHC class II / negative regulation of protein serine/threonine kinase activity / regulation of intrinsic apoptotic signaling pathway / myeloid dendritic cell activation / IkappaB kinase complex / The AIM2 inflammasome ...NLRP6 inflammasome complex / myosin I binding / Pyrin domain binding / myeloid dendritic cell activation involved in immune response / positive regulation of antigen processing and presentation of peptide antigen via MHC class II / negative regulation of protein serine/threonine kinase activity / regulation of intrinsic apoptotic signaling pathway / myeloid dendritic cell activation / IkappaB kinase complex / The AIM2 inflammasome / interleukin-6 receptor binding / AIM2 inflammasome complex / icosanoid biosynthetic process / NLRP1 inflammasome complex / macropinocytosis / canonical inflammasome complex / NLRP3 inflammasome complex assembly / BMP receptor binding / NLRP3 inflammasome complex / positive regulation of adaptive immune response / cysteine-type endopeptidase activator activity / CLEC7A/inflammasome pathway / negative regulation of interferon-beta production / osmosensory signaling pathway / regulation of tumor necrosis factor-mediated signaling pathway / positive regulation of extrinsic apoptotic signaling pathway / pattern recognition receptor signaling pathway / positive regulation of macrophage cytokine production / : / tropomyosin binding / pattern recognition receptor activity / positive regulation of release of cytochrome c from mitochondria / positive regulation of actin filament polymerization / intrinsic apoptotic signaling pathway by p53 class mediator / pyroptotic inflammatory response / positive regulation of activated T cell proliferation / 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 / positive regulation of T cell migration / : / Purinergic signaling in leishmaniasis infection / positive regulation of chemokine production / 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 / positive regulation of phagocytosis / negative regulation of canonical NF-kappaB signal transduction / tumor necrosis factor-mediated signaling pathway / positive regulation of interleukin-1 beta production / positive regulation of interleukin-8 production / apoptotic signaling pathway / regulation of protein stability / positive regulation of non-canonical NF-kappaB signal transduction / : / protein homooligomerization / regulation of autophagy / positive regulation of JNK cascade / positive regulation of interleukin-6 production / positive regulation of type II interferon production / positive regulation of T cell activation / positive regulation of tumor necrosis factor production / positive regulation of inflammatory response / SARS-CoV-1 activates/modulates innate immune responses / azurophil granule lumen / cellular response to tumor necrosis factor / regulation of inflammatory response / cellular response to lipopolysaccharide / protease binding / secretory granule lumen / defense response to virus / defense response to Gram-negative bacterium / microtubule / transmembrane transporter binding / positive regulation of canonical NF-kappaB signal transduction / positive regulation of ERK1 and ERK2 cascade / protein dimerization activity / defense response to Gram-positive bacterium / positive regulation of apoptotic process / inflammatory response / Golgi membrane / innate immune response / neuronal cell body / apoptotic process / Neutrophil degranulation / nucleolus / enzyme binding / endoplasmic reticulum / signal transduction / protein homodimerization activity / protein-containing complex / mitochondrion / extracellular region / nucleoplasm / identical protein binding / nucleus / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||||||||
| 生物種 | Homo sapiens (ヒト) | ||||||||||||
| 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: 4.41 Å | ||||||||||||
データ登録者 | Xue D / Ni F / Liu S / Yan H / Luo Z / Fu G / Wang Q / Ma J | ||||||||||||
| 資金援助 | 中国, 3件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Atomic mechanisms of full-length ASC-mediated inflammasome assembly. 著者: Dongmei Xue / Fengyun Ni / Sheng Liu / Huifang Yan / Zhenwei Luo / Gang Fu / Qinghua Wang / Jianpeng Ma / ![]() 要旨: ASC (Apoptosis-associated Speck-like protein containing a CARD) is a key adaptor protein that assembles inflammasomes by linking sensors such as NLRP3 to effectors like Caspase-1 via its PYD and CARD ...ASC (Apoptosis-associated Speck-like protein containing a CARD) is a key adaptor protein that assembles inflammasomes by linking sensors such as NLRP3 to effectors like Caspase-1 via its PYD and CARD Death Domains. Due to ASC's propensity to self-aggregate, most high-resolution structural studies focused on isolated PYD or CARD domains, leaving the atomic basis of full-length ASC assembly unknown. Here we determine atomic-resolution cryo-EM structures of PYD and CARD filaments from full-length ASC, revealing characteristic multitrack bundles composed of alternating ASC and ASC filaments that expose multiple interfaces for flexible assembly and efficient signaling. We further show that Caspase-1 filaments nucleate specifically from the B-end of ASC filaments, and that the interdomain linker modulates bundle formation. The ASC isoform ASCb, with a four-residue linker, adopts a distinct architecture, correlating with reduced Caspase-1 activation efficiency. In ASC THP-1 cells, only wild-type ASC, not interface-disrupting mutants, restored ASC speck formation and Caspase-1 activation, underscoring the requirement for intact multitrack bundles. Cryo-electron tomography captures snapshots of higher-order inflammasome structures. These findings collectively define the structural and functional principles by which ASC organizes inflammasomes to amplify immune signaling. | ||||||||||||
| 履歴 |
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構造の表示
| 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 | emd_66401.map.gz | 31.9 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-66401-v30.xml emd-66401.xml | 15.1 KB 15.1 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_66401_fsc.xml | 8.5 KB | 表示 | FSCデータファイル |
| 画像 | emd_66401.png | 83.4 KB | ||
| マスクデータ | emd_66401_msk_1.map | 64 MB | マスクマップ | |
| Filedesc metadata | emd-66401.cif.gz | 5.5 KB | ||
| その他 | emd_66401_half_map_1.map.gz emd_66401_half_map_2.map.gz | 59.4 MB 59.4 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-66401 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-66401 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 9wzgMC ![]() 9wz4C ![]() 9wz5C ![]() 9wz6C ![]() 9wz7C ![]() 9wz8C ![]() 9wzbC ![]() 9wzcC ![]() 9wzdC ![]() 9wzhC ![]() 9wziC M: このマップから作成された原子モデル 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
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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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 | ダウンロード / ファイル: emd_66401.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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: 0.85 Å | ||||||||||||||||||||||||||||||||||||
| 密度 |
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
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-添付データ
-マスク #1
| ファイル | emd_66401_msk_1.map | ||||||||||||
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| 密度ヒストグラム |
-ハーフマップ: #1
| ファイル | emd_66401_half_map_1.map | ||||||||||||
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| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: #2
| ファイル | emd_66401_half_map_2.map | ||||||||||||
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| 投影像・断面図 |
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| 密度ヒストグラム |
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試料の構成要素
-全体 : Filament
| 全体 | 名称: Filament |
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| 要素 |
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-超分子 #1: Filament
| 超分子 | 名称: Filament / タイプ: cell / ID: 1 / 親要素: 0 / 含まれる分子: all |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Apoptosis-associated speck-like protein containing a CARD
| 分子 | 名称: Apoptosis-associated speck-like protein containing a CARD 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: Homo sapiens (ヒト) |
| 分子量 | 理論値: 21.651781 KDa |
| 組換発現 | 生物種: Homo sapiens (ヒト) |
| 配列 | 文字列: MGRARDAILD ALENLTAEEL KKFKLKLLSV PLREGYGRIP RGALLSMDAL DLTDKLVSFY LETYGAELTA NVLRDMGLQE MAGQLQAAT HQGSGAAPAG IQAPPQSAAK PGLHFIDQHR AALIARVTNV EWLLDALYGK VLTDEQYQAV RAEPTNPSKM R KLFSFTPA ...文字列: MGRARDAILD ALENLTAEEL KKFKLKLLSV PLREGYGRIP RGALLSMDAL DLTDKLVSFY LETYGAELTA NVLRDMGLQE MAGQLQAAT HQGSGAAPAG IQAPPQSAAK PGLHFIDQHR AALIARVTNV EWLLDALYGK VLTDEQYQAV RAEPTNPSKM R KLFSFTPA WNWTCKDLLL QALRESQSYL VEDLERS UniProtKB: Apoptosis-associated speck-like protein containing a CARD |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 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: 7.8 |
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| 凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
| 顕微鏡 | TFS KRIOS |
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| 撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 50.0 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | 照射モード: SPOT SCAN / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 0.6 µm |
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
ムービー
コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
中国, 3件
引用































Z (Sec.)
Y (Row.)
X (Col.)












































解析
FIELD EMISSION GUN

