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基本情報
登録情報 | データベース: PDB / ID: 9b4o | ||||||||||||
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タイトル | Alzheimer's Tau Paired Helical Filaments, determined by CryoEM, before addition of D-peptide disaggregants | ||||||||||||
![]() | Microtubule-associated protein tau | ||||||||||||
![]() | PROTEIN FIBRIL / Alzheimer's disease / Tau / fibril / cryo-EM / helix / UNKNOWN FUNCTION | ||||||||||||
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 / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / negative regulation of tubulin deacetylation ...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 / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / negative regulation of tubulin deacetylation / generation of neurons / rRNA metabolic process / axonal transport of mitochondrion / regulation of chromosome organization / regulation of mitochondrial fission / axon development / central nervous system neuron development / intracellular distribution of mitochondria / 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 / main axon / protein polymerization / glial cell projection / axolemma / negative regulation of mitochondrial fission / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / neurofibrillary tangle assembly / positive regulation of axon extension / Activation of AMPK downstream of NMDARs / regulation of cellular response to heat / positive regulation of superoxide anion generation / supramolecular fiber organization / synapse assembly / regulation of long-term synaptic depression / positive regulation of protein localization / cellular response to brain-derived neurotrophic factor stimulus / regulation of calcium-mediated signaling / cytoplasmic microtubule organization / positive regulation of microtubule polymerization / somatodendritic compartment / axon cytoplasm / astrocyte activation / stress granule assembly / phosphatidylinositol binding / nuclear periphery / regulation of microtubule cytoskeleton organization / protein phosphatase 2A binding / cellular response to reactive oxygen species / Hsp90 protein binding / microglial cell activation / synapse organization / PKR-mediated signaling / cellular response to nerve growth factor stimulus / protein homooligomerization / regulation of synaptic plasticity / SH3 domain binding / response to lead ion / microtubule cytoskeleton organization / memory / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / protein-folding chaperone binding / actin binding / cellular response to heat / growth cone / microtubule cytoskeleton / cell body / 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 | 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: 3.5 Å | ||||||||||||
![]() | Hou, K. / Ge, P. / Sawaya, M.R. / Eisenberg, D.S. | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: How short peptides disassemble tau fibrils in Alzheimer's disease. 著者: Ke Hou / Peng Ge / Michael R Sawaya / Liisa Lutter / Joshua L Dolinsky / Yuan Yang / Yi Xiao Jiang / David R Boyer / Xinyi Cheng / Justin Pi / Jeffrey Zhang / Jiahui Lu / Romany Abskharon / ...著者: Ke Hou / Peng Ge / Michael R Sawaya / Liisa Lutter / Joshua L Dolinsky / Yuan Yang / Yi Xiao Jiang / David R Boyer / Xinyi Cheng / Justin Pi / Jeffrey Zhang / Jiahui Lu / Romany Abskharon / Shixin Yang / Zhiheng Yu / Juli Feigon / David S Eisenberg / ![]() 要旨: Reducing fibrous aggregates of the protein tau is a possible strategy for halting the progression of Alzheimer's disease (AD). Previously, we found that in vitro, the D-enantiomeric peptide (D- ...Reducing fibrous aggregates of the protein tau is a possible strategy for halting the progression of Alzheimer's disease (AD). Previously, we found that in vitro, the D-enantiomeric peptide (D-peptide) D-TLKIVWC disassembles ultra-stable tau fibrils extracted from the autopsied brains of individuals with AD (hereafter, these tau fibrils are referred to as AD-tau) into benign segments, with no energy source other than ambient thermal agitation. To consider D-peptide-mediated disassembly as a potential route to therapeutics for AD, it is essential to understand the mechanism and energy source of the disassembly action. Here, we show that the assembly of D-peptides into amyloid-like ('mock-amyloid') fibrils is essential for AD-tau disassembly. These mock-amyloid fibrils have a right-handed twist but are constrained to adopt a left-handed twist when templated in complex with AD-tau. The release of strain that accompanies the conversion of left-twisted to right-twisted, relaxed mock-amyloid produces a torque that is sufficient to break the local hydrogen bonding between tau molecules, and leads to the fragmentation of AD-tau. This strain-relief mechanism seems to operate in other examples of amyloid fibril disassembly, and could inform the development of first-in-class therapeutics for amyloid diseases. | ||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 225.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 134.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 977.8 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 981.8 KB | 表示 | |
XML形式データ | ![]() | 37.8 KB | 表示 | |
CIF形式データ | ![]() | 56.5 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 | ![]() 44187MC ![]() 9b4iC ![]() 9b4jC ![]() 9b4kC ![]() 9b4lC ![]() 9b4mC ![]() 9b4nC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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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: 79041.617 Da / 分子数: 10 / 由来タイプ: 天然 / 由来: (天然) ![]() 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: Tau PHF / タイプ: COMPLEX / Entity ID: all / 由来: NATURAL | |||||||||||||||
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分子量 | 実験値: NO | |||||||||||||||
由来(天然) | 生物種: ![]() | |||||||||||||||
緩衝液 | pH: 7.4 | |||||||||||||||
緩衝液成分 |
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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: COPPER / 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: 295 K |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1800 nm / Cs: 2.7 mm / 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: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k 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: 179.45 ° / 軸方向距離/サブユニット: 2.48 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: 105000 | ||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 14048 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL | ||||||||||||||||||||||||||||
拘束条件 |
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