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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: 9r2f | |||||||||||||||||||||||||||
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| タイトル | Tau filaments seeded by AD homogenate using 0N3R C322A | |||||||||||||||||||||||||||
要素 | Isoform Fetal-tau of Microtubule-associated protein tau | |||||||||||||||||||||||||||
キーワード | PROTEIN FIBRIL / MAPT / Tau / Alzheimer's Disease / RT-QuiC | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / generation of neurons ...plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / generation of neurons / rRNA metabolic process / axonal transport of mitochondrion / regulation of mitochondrial fission / axon development / regulation of microtubule-based movement / regulation of chromosome organization / intracellular distribution of mitochondria / central nervous system neuron development / minor groove of adenine-thymine-rich DNA binding / lipoprotein particle binding / microtubule polymerization / negative regulation of mitochondrial membrane potential / regulation of microtubule polymerization / dynactin binding / apolipoprotein binding / protein polymerization / main axon / axolemma / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / negative regulation of mitochondrial fission / glial cell projection / neurofibrillary tangle assembly / positive regulation of axon extension / positive regulation of microtubule polymerization / regulation of cellular response to heat / Activation of AMPK downstream of NMDARs / positive regulation of protein localization / positive regulation of superoxide anion generation / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / supramolecular fiber organization / cytoplasmic microtubule organization / regulation of calcium-mediated signaling / somatodendritic compartment / axon cytoplasm / synapse assembly / astrocyte activation / phosphatidylinositol binding / nuclear periphery / enzyme inhibitor activity / protein phosphatase 2A binding / stress granule assembly / regulation of microtubule cytoskeleton organization / regulation of autophagy / cellular response to reactive oxygen species / microglial cell activation / cellular response to nerve growth factor stimulus / Hsp90 protein binding / protein homooligomerization / SH3 domain binding / PKR-mediated signaling / regulation of synaptic plasticity / synapse organization / response to lead ion / microtubule cytoskeleton organization / memory / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / cellular response to heat / growth cone / protein-folding chaperone binding / microtubule cytoskeleton / actin binding / cell body / double-stranded DNA binding / microtubule binding / sequence-specific DNA binding / amyloid fibril formation / dendritic spine / microtubule / protein-macromolecule adaptor activity / learning or memory / neuron projection / membrane raft / negative regulation of gene expression / axon / neuronal cell body / DNA damage response / dendrite / protein kinase binding / enzyme binding / mitochondrion / DNA binding / RNA binding / extracellular region / identical protein binding / nucleus 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: 2.8 Å | |||||||||||||||||||||||||||
データ登録者 | Lovestam, S. / Scheres, H.W.S. | |||||||||||||||||||||||||||
| 資金援助 | 英国, 1件
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引用 | ジャーナル: FEBS Lett / 年: 2025タイトル: Serial amplification of tau filaments using Alzheimer's brain homogenates and C322A or C322S recombinant tau. 著者: Alessia Santambrogio / Sofia Lövestam / Michael A Metrick / Thomas Löhr / Peifeng Xu / Nicholas C T Gallagher / Bernardino Ghetti / Byron Caughey / Sjors H W Scheres / Michele Vendruscolo / ![]() 要旨: The assembly of tau into amyloid filaments is a hallmark of Alzheimer's disease (AD) and other tauopathies. Cryo-EM revealed the existence of disease-specific tau folds, which are challenging to ...The assembly of tau into amyloid filaments is a hallmark of Alzheimer's disease (AD) and other tauopathies. Cryo-EM revealed the existence of disease-specific tau folds, which are challenging to replicate in vitro. We studied three full-length recombinant 0N3R tau forms (the wild-type and the C322A and C322S variants) using an RT-QuIC assay with brain homogenate seeding. C322A tau formed filaments resembling AD paired helical filaments (PHFs) but with a more open C-shaped core. C322S tau yielded structurally distinct filaments with an ordered C-terminal region. Both mutants seeded further aggregation, whereas the wild-type showed poor reproducibility and mainly unfolded aggregates. These results highlight the importance of optimised conditions to produce disease-relevant tau filaments and aid the development of targeted therapies. Impact statement We investigated the seeded assembly of 0N3R tau and its two mutational variants C322A and C322S, using Alzheimer's disease brain homogenates in a real-time quaking-induced conversion (RT-QuIC) assay. The C322A variant formed filaments partially resembling the AD PHF structure, showing the importance of optimised conditions to produce disease-relevant tau filaments. | |||||||||||||||||||||||||||
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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 | 9r2f.cif.gz | 144.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9r2f.ent.gz | 117.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9r2f.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/r2/9r2f ftp://data.pdbj.org/pub/pdb/validation_reports/r2/9r2f | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 53527MC ![]() 9r2hC 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: 7808.945 Da / 分子数: 6 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: MAPT, MAPTL, MTBT1, TAU / 発現宿主: ![]() 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: FILAMENT / 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: Microtubule associate tau protein assembled into an amyloid filament 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: 7.2 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
| 急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 100 % |
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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: 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 / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 500 nm |
| 撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
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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: 179.6 ° / 軸方向距離/サブユニット: 2.417 Å / らせん対称軸の対称性: C1 | ||||||||||||
| 3次元再構成 | 解像度: 2.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 61103 / アルゴリズム: BACK PROJECTION / 対称性のタイプ: HELICAL |
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万見について




Homo sapiens (ヒト)
英国, 1件
引用



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FIELD EMISSION GUN