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基本情報
登録情報 | データベース: PDB / ID: 9c5r | |||||||||
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タイトル | Structure of recombinantly assembled alpha-synuclein variant fibrils | |||||||||
![]() | Alpha-synuclein | |||||||||
![]() | PROTEIN FIBRIL / alpha-synuclein fibrils / structural protein | |||||||||
機能・相同性 | ![]() negative regulation of mitochondrial electron transport, NADH to ubiquinone / : / response to desipramine / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber ...negative regulation of mitochondrial electron transport, NADH to ubiquinone / : / response to desipramine / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / mitochondrial membrane organization / regulation of synaptic vesicle recycling / negative regulation of chaperone-mediated autophagy / regulation of reactive oxygen species biosynthetic process / negative regulation of platelet-derived growth factor receptor signaling pathway / positive regulation of protein localization to cell periphery / negative regulation of exocytosis / regulation of glutamate secretion / SNARE complex assembly / positive regulation of neurotransmitter secretion / dopamine biosynthetic process / regulation of norepinephrine uptake / response to iron(II) ion / negative regulation of dopamine metabolic process / transporter regulator activity / regulation of locomotion / mitochondrial ATP synthesis coupled electron transport / regulation of macrophage activation / positive regulation of inositol phosphate biosynthetic process / synaptic vesicle priming / negative regulation of microtubule polymerization / synaptic vesicle transport / positive regulation of receptor recycling / dopamine uptake involved in synaptic transmission / protein kinase inhibitor activity / dynein complex binding / regulation of dopamine secretion / negative regulation of thrombin-activated receptor signaling pathway / nuclear outer membrane / cuprous ion binding / positive regulation of exocytosis / response to magnesium ion / synaptic vesicle exocytosis / positive regulation of endocytosis / kinesin binding / synaptic vesicle endocytosis / enzyme inhibitor activity / cysteine-type endopeptidase inhibitor activity / negative regulation of serotonin uptake / regulation of presynapse assembly / response to type II interferon / alpha-tubulin binding / beta-tubulin binding / phospholipase binding / behavioral response to cocaine / supramolecular fiber organization / cellular response to copper ion / phospholipid metabolic process / cellular response to fibroblast growth factor stimulus / inclusion body / axon terminus / cellular response to epinephrine stimulus / Hsp70 protein binding / response to interleukin-1 / regulation of microtubule cytoskeleton organization / SNARE binding / positive regulation of release of sequestered calcium ion into cytosol / adult locomotory behavior / excitatory postsynaptic potential / phosphoprotein binding / fatty acid metabolic process / protein tetramerization / microglial cell activation / regulation of long-term neuronal synaptic plasticity / ferrous iron binding / synapse organization / protein destabilization / PKR-mediated signaling / phospholipid binding / receptor internalization / tau protein binding / long-term synaptic potentiation / terminal bouton / positive regulation of inflammatory response / synaptic vesicle membrane / actin cytoskeleton / actin binding / growth cone / cellular response to oxidative stress / cell cortex / neuron apoptotic process / microtubule binding / chemical synaptic transmission / molecular adaptor activity / response to lipopolysaccharide / histone binding / amyloid fibril formation / negative regulation of neuron apoptotic process / mitochondrial outer membrane / lysosome 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: 2.61 Å | |||||||||
![]() | Sun, C.Q. / Zhou, K. / DePaola IV, P. / Lee, V.M.Y. / Li, C. / Zhou, Z.H. / Rodriguez, J.A. / Peng, C. / Jiang, L. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of a distinct α-synuclein strain that promotes tau inclusion in neurons. 著者: Chuanqi Sun / Kang Zhou / Peter DePaola / Cally Li / Virginia M Y Lee / Z Hong Zhou / Chao Peng / Lin Jiang / ![]() 要旨: Amyloidoses are predominantly associated with the accumulation of persistent aggregates of a particular protein. For example, the protein α-synuclein characteristically aggregates in Parkinson's ...Amyloidoses are predominantly associated with the accumulation of persistent aggregates of a particular protein. For example, the protein α-synuclein characteristically aggregates in Parkinson's disease (PD), while amyloid beta and tau deposits are associated with Alzheimer's disease (AD). However, α-synuclein-positive inclusions have been reportedly found in some tauopathies, and vice versa; tau-positive inclusions can be found in synucleinopathies. This suggests that there may be coexistence or crosstalk between these proteinopathies. This coexistence suggests that the simultaneous presence of these misfolded proteins may amplify pathogenic mechanisms. However, the crosstalk between these two types of proteopathies remains poorly understood. We now determine the structure of α-synuclein fibrils that directly promote tau aggregation by cryogenic electron microscopy. Helical reconstruction at 2.6 Å resolution reveals a new α-synuclein fibril polymorph we term "strain B"; its core is unique, incorporating both the N- and C-termini of α-synuclein. The design of peptides meant to inhibit the formation of this structure demonstrates that the C-terminal domain fragment (D105-E115) of α-synuclein is critical for the formation of "strain B" fibrils and may play a key role in its interaction with tau. We hypothesize that the unique structure of pathological α-synuclein significantly contributes to tau co-aggregation and plays a role in the intricate interactions among Alzheimer's, Parkinson's, and other neurodegenerative diseases. These findings open new avenues for drug targeting, discovery, and improve our understanding of neurodegenerative pathology. | |||||||||
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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 | ![]() | 138.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 108.9 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1012.2 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1018.4 KB | 表示 | |
XML形式データ | ![]() | 34.4 KB | 表示 | |
CIF形式データ | ![]() | 51.9 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 | ![]() 45221MC 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 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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対称性 | らせん対称: (回転対称性: 1 / Dyad axis: no / N subunits divisor: 1 / Num. of operations: 10 / Rise per n subunits: 2.408 Å / Rotation per n subunits: 179.477 °) |
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要素
#1: タンパク質 | 分子量: 14476.108 Da / 分子数: 10 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P37840 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: alpha-synuclein / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 60 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: 7.5 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 8 mg/ml / 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 R2/1 | ||||||||||||||||||||
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: 283.15 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): 2200 nm / 最小 デフォーカス(公称値): 900 nm / Calibrated defocus min: 700 nm / 最大 デフォーカス(補正後): 2800 nm / Cs: 2.7 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: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 3.6 sec. / 電子線照射量: 48 e/Å2 / 検出モード: SUPER-RESOLUTION / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 4094 |
電子光学装置 | エネルギーフィルター名称: GIF Quantum LS / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 横: 5760 / 縦: 4092 / 動画フレーム数/画像: 5 / 利用したフレーム数/画像: 2-34 |
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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: 179.477 ° / 軸方向距離/サブユニット: 2.408 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: 57074 | ||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.61 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 26051 / 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: 53.18 / プロトコル: RIGID BODY FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 6CU7 PDB chain-ID: A / Accession code: 6CU7 / Source name: PDB / タイプ: experimental model |