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基本情報
登録情報 | データベース: PDB / ID: 6qjh | |||||||||
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タイトル | Cryo-EM structure of heparin-induced 2N4R tau snake filaments | |||||||||
![]() | Microtubule-associated protein tau | |||||||||
![]() | PROTEIN FIBRIL / Recombinant tau protein / heparin / filament / cross-beta structure | |||||||||
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 / axonal transport / positive regulation of protein localization to synapse / main axon / phosphatidylinositol bisphosphate binding / regulation of long-term synaptic depression ...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 / axonal transport / positive regulation of protein localization to synapse / main axon / phosphatidylinositol bisphosphate binding / regulation of long-term synaptic depression / tubulin complex / 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 / 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 / dynactin binding / negative regulation of mitochondrial membrane potential / apolipoprotein binding / glial cell projection / axolemma / protein polymerization / 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 / synapse assembly / regulation of cellular response to heat / supramolecular fiber organization / positive regulation of protein localization / regulation of calcium-mediated signaling / somatodendritic compartment / cellular response to brain-derived neurotrophic factor stimulus / cytoplasmic microtubule organization / axon cytoplasm / positive regulation of microtubule polymerization / 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 / cellular response to nerve growth factor stimulus / synapse organization / response to lead ion / PKR-mediated signaling / regulation of synaptic plasticity / protein homooligomerization / SH3 domain binding / regulation of autophagy / memory / microtubule cytoskeleton organization / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / microtubule cytoskeleton / protein-folding chaperone binding / actin binding / cellular response to heat / cell body / growth cone / double-stranded DNA binding / microtubule binding / protein-macromolecule adaptor activity / dendritic spine / sequence-specific DNA binding / amyloid fibril formation / microtubule / learning or memory / neuron projection / nuclear speck / 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 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.3 Å | |||||||||
![]() | Zhang, W. / Falcon, B. / Murzin, A.G. / Fan, J. / Crowther, R.A. / Goedert, M. / Scheres, S.H.W. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Heparin-induced tau filaments are polymorphic and differ from those in Alzheimer's and Pick's diseases. 著者: Wenjuan Zhang / Benjamin Falcon / Alexey G Murzin / Juan Fan / R Anthony Crowther / Michel Goedert / Sjors Hw Scheres / ![]() 要旨: Assembly of microtubule-associated protein tau into filamentous inclusions underlies a range of neurodegenerative diseases. Tau filaments adopt different conformations in Alzheimer's and Pick's ...Assembly of microtubule-associated protein tau into filamentous inclusions underlies a range of neurodegenerative diseases. Tau filaments adopt different conformations in Alzheimer's and Pick's diseases. Here, we used cryo- and immuno- electron microscopy to characterise filaments that were assembled from recombinant full-length human tau with four (2N4R) or three (2N3R) microtubule-binding repeats in the presence of heparin. 2N4R tau assembles into multiple types of filaments, and the structures of three types reveal similar 'kinked hairpin' folds, in which the second and third repeats pack against each other. 2N3R tau filaments are structurally homogeneous, and adopt a dimeric core, where the third repeats of two tau molecules pack in a parallel manner. The heparin-induced tau filaments differ from those of Alzheimer's or Pick's disease, which have larger cores with different repeat compositions. Our results illustrate the structural versatility of amyloid filaments, and raise questions about the relevance of in vitro assembly. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | 分子: ![]() ![]() |
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-検証レポート
文書・要旨 | ![]() | 839.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 839.1 KB | 表示 | |
XML形式データ | ![]() | 21.9 KB | 表示 | |
CIF形式データ | ![]() | 30.4 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 | ![]() 4563MC ![]() 4564C ![]() 4565C ![]() 4566C ![]() 6qjmC ![]() 6qjpC ![]() 6qjqC 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 | |
電子顕微鏡画像生データ | ![]() Data size: 446.3 / Data #1: Aligned micrographs [micrographs - single frame] / Data #2: Raw movies [micrographs - multiframe]) |
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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: 6224.221 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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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: 単粒子再構成法 |
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試料調製
構成要素 | 名称: heparin-induced 2N4R tau snake filaments / タイプ: COMPLEX 詳細: Recombinant tau protein was induced into filaments by incubation with heparin at 37 C for 3 days Entity ID: all / 由来: RECOMBINANT | |||||||||||||||
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分子量 | 値: 45.85 kDa/nm / 実験値: NO | |||||||||||||||
由来(天然) | 生物種: ![]() | |||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | |||||||||||||||
緩衝液 | pH: 7.4 / 詳細: 20 mM Tris, pH 7.4, 100mM NaCl | |||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Recombinant tau protein was induced into filaments by incubation with heparin at 37 C for 3 days. The filaments were pronase-treated before making Cryo-grids. | |||||||||||||||
試料支持 | 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: Quantifoil 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: Blot force: -12 ; Blot time: 4s |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Tecnai Polara / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI POLARA 300 |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2800 nm / 最小 デフォーカス(公称値): 1700 nm / Cs: 2 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: GATAN LIQUID NITROGEN |
撮影 | 平均露光時間: 1 sec. / 電子線照射量: 48 e/Å2 / 検出モード: INTEGRATING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 撮影したグリッド数: 1 / 実像数: 717 詳細: Images were collected in movie-mode at 30 frames per second |
画像スキャン | サンプリングサイズ: 14 µm / 横: 4096 / 縦: 4096 |
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解析
EMソフトウェア |
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画像処理 | 詳細: Movie frames were gain-corrected, aligned, dose weighted and then summed into a single micrograph using MOTIONCOR2 (Zheng et al., 2017). | ||||||||||||||||||||||||||||||||||||||||||||
CTF補正 | 詳細: Aligned, non-dose-weighted micrographs were used to estimate the contrast transfer function (CTF) using CTFFIND4.1 タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: -1.26 ° / 軸方向距離/サブユニット: 4.7 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: 303754 / 詳細: Manually picked | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 52441 / アルゴリズム: FOURIER SPACE / 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: 41.26 / プロトコル: AB INITIO MODEL / 空間: RECIPROCAL / Target criteria: Fourier shell correlation 詳細: A stack of three consecutive monomers was refined to preserve nearest-neighbour interactions for the middle chain. Side-chain clashes were detected using MOLPROBITY, and corrected by ...詳細: A stack of three consecutive monomers was refined to preserve nearest-neighbour interactions for the middle chain. Side-chain clashes were detected using MOLPROBITY, and corrected by iterative cycles of real-space refinement in COOT and Fourier-space refinement in REFMAC and PHENIX. For each refined structure, separate model refinements were performed against a single half-map, and the resulting model was compared to the other half-map to confirm the absence of overfitting. |