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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Cryo-EM structure of acetylated alpha-synuclein A53T fibril - polymorph A | |||||||||
![]() | The final map from Relion PostProcess | |||||||||
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![]() | amyloid / neurodegeneration / aggregrate / PROTEIN FIBRIL | |||||||||
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 | らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 2.21 Å | |||||||||
![]() | Ansari S / Li Y / Frederick KK | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: In cell NMR reveals cells selectively amplify and structurally remodel amyloid fibrils. 著者: Shoyab Ansari / Dominique Lagasca / Rania Dumarieh / Yiling Xiao / Sakshi Krishna / Yang Li / Kendra K Frederick / ![]() 要旨: Amyloid forms of α-synuclein adopt different conformations depending on environmental conditions. Advances in structural biology have accelerated fibril characterization. However, it remains unclear ...Amyloid forms of α-synuclein adopt different conformations depending on environmental conditions. Advances in structural biology have accelerated fibril characterization. However, it remains unclear which conformations predominate in biological settings because current methods typically not only require isolating fibrils from their native environments, but they also do not provide insight about flexible regions. To address this, we characterized α-syn amyloid seeds and used sensitivity enhanced nuclear magnetic resonance to investigate the amyloid fibrils resulting from seeded amyloid propagation in different settings. We found that the amyloid fold and conformational preferences of flexible regions are faithfully propagated and in cellular lysates. However, seeded propagation of amyloids inside cells led to the minority conformation in the seeding population becoming predominant and more ordered, and altered the conformational preferences of flexible regions. The examination of the entire ensemble of protein conformations in biological settings that is made possible with this approach may advance our understanding of protein misfolding disorders and facilitate structure-based drug design efforts. | |||||||||
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 | ![]() | 7.3 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 16.1 KB 16.1 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 10.6 KB | 表示 | ![]() |
画像 | ![]() | 60 KB | ||
マスクデータ | ![]() | 103 MB | ![]() | |
Filedesc metadata | ![]() | 5.7 KB | ||
その他 | ![]() ![]() | 80.7 MB 80.7 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 741.6 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 741.1 KB | 表示 | |
XML形式データ | ![]() | 17.7 KB | 表示 | |
CIF形式データ | ![]() | 23.1 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 | ![]() 9ckkMC ![]() 9cklC 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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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | The final map from Relion PostProcess | ||||||||||||||||||||||||||||||||||||
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: 0.84 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
-マスク #1
ファイル | ![]() | ||||||||||||
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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: Unfiltered half map 2
ファイル | emd_45650_half_map_1.map | ||||||||||||
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注釈 | Unfiltered half map 2 | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: Unfiltered half map 1
ファイル | emd_45650_half_map_2.map | ||||||||||||
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注釈 | Unfiltered half map 1 | ||||||||||||
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 : Acetylated alpha-synuclein A53T fibril - polymorph A
全体 | 名称: Acetylated alpha-synuclein A53T fibril - polymorph A |
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要素 |
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-超分子 #1: Acetylated alpha-synuclein A53T fibril - polymorph A
超分子 | 名称: Acetylated alpha-synuclein A53T fibril - polymorph A タイプ: organelle_or_cellular_component / 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: Alpha-synuclein
分子 | 名称: Alpha-synuclein / タイプ: protein_or_peptide / ID: 1 / コピー数: 8 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 14.506136 KDa |
組換発現 | 生物種: ![]() ![]() |
配列 | 文字列: MDVFMKGLSK AKEGVVAAAE KTKQGVAEAA GKTKEGVLYV GSKTKEGVVH GVTTVAEKTK EQVTNVGGAV VTGVTAVAQK TVEGAGSIA AATGFVKKDQ LGKNEEGAPQ EGILEDMPVD PDNEAYEMPS EEGYQDYEPE A UniProtKB: Alpha-synuclein |
-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: 7.2 構成要素:
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凍結 | 凍結剤: ETHANE / チャンバー内湿度: 95 % |
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電子顕微鏡法
顕微鏡 | TFS KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 7020 / 平均露光時間: 3.5 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): 2.2 µm / 最小 デフォーカス(公称値): 0.9 µm / 倍率(公称値): 105000 |
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 |