+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7mkf | ||||||
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タイトル | Paired helical tau filament extracted from PrP-CAA Patient brain tissue | tau filament | PHF Tau | ||||||
要素 | Isoform Tau-F of Microtubule-associated protein tau | ||||||
キーワード | PROTEIN FIBRIL / tau filament / GSS / PrP-CAA / amyloid fibril / Alzheimer disease | ||||||
機能・相同性 | Activation of AMPK downstream of NMDARs / PKR-mediated signaling / Isoform Tau-F of Microtubule-associated protein tau 機能・相同性情報 | ||||||
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: 3 Å | ||||||
データ登録者 | Hoq, M.R. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Acta Neuropathol / 年: 2021 タイトル: Structure of Tau filaments in Prion protein amyloidoses. 著者: Grace I Hallinan / Md Rejaul Hoq / Manali Ghosh / Frank S Vago / Anllely Fernandez / Holly J Garringer / Ruben Vidal / Wen Jiang / Bernardino Ghetti / 要旨: In human neurodegenerative diseases associated with the intracellular aggregation of Tau protein, the ordered cores of Tau filaments adopt distinct folds. Here, we analyze Tau filaments isolated from ...In human neurodegenerative diseases associated with the intracellular aggregation of Tau protein, the ordered cores of Tau filaments adopt distinct folds. Here, we analyze Tau filaments isolated from the brain of individuals affected by Prion-Protein cerebral amyloid angiopathy (PrP-CAA) with a nonsense mutation in the PRNP gene that leads to early termination of translation of PrP (Q160Ter or Q160X), and Gerstmann-Sträussler-Scheinker (GSS) disease, with a missense mutation in the PRNP gene that leads to an amino acid substitution at residue 198 (F198S) of PrP. The clinical and neuropathologic phenotypes associated with these two mutations in PRNP are different; however, the neuropathologic analyses of these two genetic variants have consistently shown the presence of numerous neurofibrillary tangles (NFTs) made of filamentous Tau aggregates in neurons. We report that Tau filaments in PrP-CAA (Q160X) and GSS (F198S) are composed of 3-repeat and 4-repeat Tau isoforms, having a striking similarity to NFTs in Alzheimer disease (AD). In PrP-CAA (Q160X), Tau filaments are made of both paired helical filaments (PHFs) and straight filaments (SFs), while in GSS (F198S), only PHFs were found. Mass spectrometry analyses of Tau filaments extracted from PrP-CAA (Q160X) and GSS (F198S) brains show the presence of post-translational modifications that are comparable to those seen in Tau aggregates from AD. Cryo-EM analysis reveals that the atomic models of the Tau filaments obtained from PrP-CAA (Q160X) and GSS (F198S) are identical to those of the Tau filaments from AD, and are therefore distinct from those of Pick disease, chronic traumatic encephalopathy, and corticobasal degeneration. Our data support the hypothesis that in the presence of extracellular amyloid deposits and regardless of the primary amino acid sequence of the amyloid protein, similar molecular mechanisms are at play in the formation of identical Tau filaments. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7mkf.cif.gz | 308.9 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7mkf.ent.gz | 233.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7mkf.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
文書・要旨 | 7mkf_validation.pdf.gz | 873.1 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7mkf_full_validation.pdf.gz | 874.4 KB | 表示 | |
XML形式データ | 7mkf_validation.xml.gz | 30 KB | 表示 | |
CIF形式データ | 7mkf_validation.cif.gz | 41.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mk/7mkf ftp://data.pdbj.org/pub/pdb/validation_reports/mk/7mkf | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 45919.871 Da / 分子数: 10 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: P10636-8 |
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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: FILAMENT / 3次元再構成法: らせん対称体再構成法 |
-試料調製
構成要素 | 名称: Paired helical filament (PHF) from PrP-CAA / タイプ: ORGANELLE OR CELLULAR COMPONENT 詳細: PHF tau in PrP-CAA, caused by the Q160X truncating mutation in PRNP Entity ID: all / 由来: NATURAL |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.4 |
試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 1.067 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 2004 |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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らせん対称 | 回転角度/サブユニット: -1.2 ° / 軸方向距離/サブユニット: 4.77 Å / らせん対称軸の対称性: C1 |
3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 60 / 対称性のタイプ: HELICAL |