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基本情報
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タイトル | Cryo-EM structure of tau filaments made from jR2R3-P301L peptides induced with heparin | |||||||||
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![]() | tau / amyloid / filament / P301L / PROTEIN FIBRIL | |||||||||
機能・相同性 | ![]() plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / main axon / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding ...plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / main axon / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / negative regulation of tubulin deacetylation / generation of neurons / regulation of chromosome organization / rRNA metabolic process / axonal transport of mitochondrion / regulation of mitochondrial fission / axon development / regulation of long-term synaptic depression / central nervous system neuron development / intracellular distribution of mitochondria / regulation of microtubule polymerization / microtubule polymerization / lipoprotein particle binding / minor groove of adenine-thymine-rich DNA binding / negative regulation of mitochondrial membrane potential / dynactin binding / apolipoprotein binding / axolemma / protein polymerization / glial cell projection / negative regulation of mitochondrial fission / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / positive regulation of axon extension / neurofibrillary tangle assembly / Activation of AMPK downstream of NMDARs / regulation of cellular response to heat / supramolecular fiber organization / synapse assembly / positive regulation of protein localization / cellular response to brain-derived neurotrophic factor stimulus / somatodendritic compartment / regulation of calcium-mediated signaling / cytoplasmic microtubule organization / positive regulation of microtubule polymerization / axon cytoplasm / stress granule assembly / phosphatidylinositol binding / regulation of microtubule cytoskeleton organization / nuclear periphery / protein phosphatase 2A binding / positive regulation of superoxide anion generation / cellular response to reactive oxygen species / astrocyte activation / Hsp90 protein binding / microglial cell activation / response to lead ion / cellular response to nerve growth factor stimulus / synapse organization / PKR-mediated signaling / protein homooligomerization / regulation of synaptic plasticity / SH3 domain binding / memory / microtubule cytoskeleton organization / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / protein-folding chaperone binding / actin binding / cellular response to heat / microtubule cytoskeleton / cell body / growth cone / double-stranded DNA binding / protein-macromolecule adaptor activity / microtubule binding / dendritic spine / sequence-specific DNA binding / amyloid fibril formation / microtubule / learning or memory / neuron projection / regulation of autophagy / membrane raft / axon / negative regulation of gene expression / neuronal cell body / dendrite / DNA damage response / protein kinase binding / enzyme binding / mitochondrion / DNA binding / RNA binding / extracellular region / identical protein binding / nucleus / plasma membrane 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: 3.0 Å | |||||||||
![]() | Vigers M / Han S | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Water-directed pinning is key to tau prion formation. 著者: Michael P Vigers / Samuel Lobo / Saeed Najafi / Austin Dubose / Karen Tsay / Pritam Ganguly / Andrew P Longhini / Yingying Jin / Steven K Buratto / Kenneth S Kosik / M Scott Shell / Joan-Emma Shea / Songi Han / ![]() 要旨: Tau forms fibrillar aggregates that are pathological hallmarks of a family of neurodegenerative diseases known as tauopathies. The synthetic replication of disease-specific fibril structures is a ...Tau forms fibrillar aggregates that are pathological hallmarks of a family of neurodegenerative diseases known as tauopathies. The synthetic replication of disease-specific fibril structures is a critical gap for developing diagnostic and therapeutic tools. This study debuts a strategy of identifying a critical and minimal folding motif in fibrils characteristic of tauopathies and generating seeding-competent fibrils from the isolated tau peptides. The 19-residue jR2R3 peptide (295 to 313) which spans the R2/R3 splice junction of tau, and includes the P301L mutation, is one such peptide that forms prion-competent fibrils. This tau fragment contains the hydrophobic VQIVYK hexapeptide that is part of the core of all known pathological tau fibril structures and an intramolecular counterstrand that stabilizes the strand-loop-strand (SLS) motif observed in 4R tauopathy fibrils. This study shows that P301L exhibits a duality of effects: it lowers the barrier for the peptide to adopt aggregation-prone conformations and enhances the local structuring of water around the mutation site to facilitate site-directed pinning and dewetting around sites 300-301 to achieve in-register stacking of tau to cross β-sheets. We solved a 3 Å cryo-EM structure of jR2R3-P301L fibrils in which each protofilament layer contains two jR2R3-P301L copies, of which one adopts a SLS fold found in 4R tauopathies and the other wraps around the SLS fold to stabilize it, reminiscent of the three- and fourfold structures observed in 4R tauopathies. These jR2R3-P301L fibrils are competent to template full-length 4R tau in a prion-like manner. | |||||||||
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 | ![]() | 195.4 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 17.3 KB 17.3 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 13.6 KB | 表示 | ![]() |
画像 | ![]() | 167.5 KB | ||
Filedesc metadata | ![]() | 5.4 KB | ||
その他 | ![]() ![]() | 170.9 MB 170.8 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 765.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 765.3 KB | 表示 | |
XML形式データ | ![]() | 21.7 KB | 表示 | |
CIF形式データ | ![]() | 28.5 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 8v1nMC 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 ![]() |
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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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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: 1.064 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
-ハーフマップ: #1
ファイル | emd_42886_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_42886_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 of tau jR2R3-P301L peptide indued with heparin
全体 | 名称: Filament of tau jR2R3-P301L peptide indued with heparin |
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要素 |
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-超分子 #1: Filament of tau jR2R3-P301L peptide indued with heparin
超分子 | 名称: Filament of tau jR2R3-P301L peptide indued with heparin 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: ![]() |
-分子 #1: Microtubule-associated protein tau
分子 | 名称: Microtubule-associated protein tau / タイプ: protein_or_peptide / ID: 1 / コピー数: 12 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 2.026359 KDa |
配列 | 文字列: DNIKHVLGGG SVQIVYKPV UniProtKB: Microtubule-associated protein tau |
-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
緩衝液 | pH: 7.4 構成要素:
詳細: 20mM ammoniium acetate, 50mM NaCl | |||||||||
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凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277 K / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 検出モード: SUPER-RESOLUTION / 撮影したグリッド数: 1 / 平均露光時間: 3.129 sec. / 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 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): 1.0 µm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |