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データを開く
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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 | |||||||||
マップデータ | The final map from Relion PostProcess | |||||||||
試料 |
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キーワード | amyloid / neurodegeneration / aggregrate / PROTEIN FIBRIL | |||||||||
| 機能・相同性 | 機能・相同性情報negative regulation of mitochondrial electron transport, NADH to ubiquinone / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / response to desipramine / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / regulation of synaptic vesicle recycling ...negative regulation of mitochondrial electron transport, NADH to ubiquinone / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / response to desipramine / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / regulation of synaptic vesicle recycling / negative regulation of chaperone-mediated autophagy / regulation of reactive oxygen species biosynthetic process / positive regulation of protein localization to cell periphery / mitochondrial membrane organization / negative regulation of exocytosis / regulation of glutamate secretion / dopamine biosynthetic process / response to iron(II) ion / positive regulation of neurotransmitter secretion / regulation of macrophage activation / negative regulation of dopamine metabolic process / negative regulation of platelet-derived growth factor receptor signaling pathway / SNARE complex assembly / negative regulation of thrombin-activated receptor signaling pathway / Lewy body / regulation of locomotion / negative regulation of microtubule polymerization / positive regulation of inositol phosphate biosynthetic process / synaptic vesicle priming / regulation of norepinephrine uptake / transporter regulator activity / protein kinase inhibitor activity / synaptic vesicle transport / dopamine uptake involved in synaptic transmission / regulation of dopamine secretion / positive regulation of receptor recycling / positive regulation of exocytosis / cuprous ion binding / mitochondrial ATP synthesis coupled electron transport / nuclear outer membrane / dynein complex binding / response to magnesium ion / synaptic vesicle exocytosis / positive regulation of endocytosis / negative regulation of serotonin uptake / response to type II interferon / kinesin binding / cysteine-type endopeptidase inhibitor activity / regulation of presynapse assembly / synaptic vesicle endocytosis / alpha-tubulin binding / beta-tubulin binding / phospholipase binding / phospholipid metabolic process / supramolecular fiber organization / behavioral response to cocaine / cellular response to fibroblast growth factor stimulus / inclusion body / cellular response to epinephrine stimulus / Hsp70 protein binding / enzyme inhibitor activity / response to interleukin-1 / axon terminus / cellular response to copper ion / positive regulation of release of sequestered calcium ion into cytosol / regulation of microtubule cytoskeleton organization / SNARE binding / adult locomotory behavior / glutathione metabolic process / protein tetramerization / excitatory postsynaptic potential / protein sequestering activity / tubulin binding / phosphoprotein binding / microglial cell activation / ferrous iron binding / fatty acid metabolic process / PKR-mediated signaling / receptor internalization / phospholipid binding / synapse organization / regulation of long-term neuronal synaptic plasticity / protein destabilization / tau protein binding / enzyme activator activity / terminal bouton / positive regulation of inflammatory response / long-term synaptic potentiation / synaptic vesicle membrane / actin cytoskeleton / growth cone / actin binding / cellular response to oxidative stress / neuron apoptotic process / cell cortex / histone binding / response to lipopolysaccharide / microtubule binding / amyloid fibril formation / chemical synaptic transmission 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||
| 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 | |||||||||
データ登録者 | Ansari S / Li Y / Frederick KK | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: bioRxiv / 年: 2024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 | emd_45650.map.gz | 7.3 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-45650-v30.xml emd-45650.xml | 16.1 KB 16.1 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_45650_fsc.xml | 10.6 KB | 表示 | FSCデータファイル |
| 画像 | emd_45650.png | 60 KB | ||
| マスクデータ | emd_45650_msk_1.map | 103 MB | マスクマップ | |
| Filedesc metadata | emd-45650.cif.gz | 5.7 KB | ||
| その他 | emd_45650_half_map_1.map.gz emd_45650_half_map_2.map.gz | 80.7 MB 80.7 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-45650 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-45650 | 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 F&H 検索 |
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リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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マップ
| ファイル | ダウンロード / ファイル: emd_45650.map.gz / 形式: CCP4 / 大きさ: 103 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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 | emd_45650_msk_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: 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: Homo sapiens (ヒト) |
-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: Homo sapiens (ヒト) |
| 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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解析 | 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: FIELD EMISSION GUN |
| 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 |
ムービー
コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
米国, 2件
引用


Z (Sec.)
Y (Row.)
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解析
FIELD EMISSION GUN

