+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-29980 | ||||||||||||||||||||||||
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タイトル | Cryo-EM structure of serine 87 O-GlcNAc-modified alpha-synuclein fibrils | ||||||||||||||||||||||||
マップデータ | main map. This map was used to build model | ||||||||||||||||||||||||
試料 |
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キーワード | alpha-synuclein / O-GlcNAc / amyloid / fibril / posttranslational modification / 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 phospholipase activity / negative regulation of monooxygenase activity / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / positive regulation of glutathione peroxidase activity / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process ...negative regulation of mitochondrial electron transport, NADH to ubiquinone / neutral lipid metabolic process / regulation of phospholipase activity / negative regulation of monooxygenase activity / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / positive regulation of glutathione peroxidase activity / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / negative regulation of transporter activity / mitochondrial membrane organization / negative regulation of chaperone-mediated autophagy / regulation of reactive oxygen species biosynthetic process / positive regulation of protein localization to cell periphery / regulation of synaptic vesicle recycling / negative regulation of platelet-derived growth factor receptor signaling pathway / negative regulation of exocytosis / regulation of glutamate secretion / response to iron(II) ion / regulation of norepinephrine uptake / SNARE complex assembly / positive regulation of neurotransmitter secretion / dopamine biosynthetic process / regulation of locomotion / positive regulation of inositol phosphate biosynthetic process / synaptic vesicle priming / regulation of macrophage activation / negative regulation of microtubule polymerization / synaptic vesicle transport / dopamine uptake involved in synaptic transmission / dynein complex binding / regulation of dopamine secretion / positive regulation of receptor recycling / protein kinase inhibitor activity / negative regulation of thrombin-activated receptor signaling pathway / response to type II interferon / cuprous ion binding / positive regulation of exocytosis / synaptic vesicle exocytosis / positive regulation of endocytosis / kinesin binding / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / response to magnesium ion / synaptic vesicle endocytosis / regulation of presynapse assembly / negative regulation of serotonin uptake / alpha-tubulin binding / phospholipid metabolic process / supramolecular fiber organization / axon terminus / mitochondrial ATP synthesis coupled electron transport / inclusion body / fatty acid metabolic process / cellular response to copper ion / cellular response to epinephrine stimulus / Hsp70 protein binding / response to interleukin-1 / adult locomotory behavior / negative regulation of cysteine-type endopeptidase activity involved in apoptotic process / positive regulation of release of sequestered calcium ion into cytosol / SNARE binding / excitatory postsynaptic potential / long-term synaptic potentiation / phosphoprotein binding / protein tetramerization / regulation of transmembrane transporter activity / synapse organization / microglial cell activation / negative regulation of protein kinase activity / regulation of long-term neuronal synaptic plasticity / protein destabilization / ferrous iron binding / tau protein binding / positive regulation of protein serine/threonine kinase activity / PKR-mediated signaling / receptor internalization / phospholipid binding / activation of cysteine-type endopeptidase activity involved in apoptotic process / synaptic vesicle membrane / positive regulation of inflammatory response / positive regulation of peptidyl-serine phosphorylation / actin cytoskeleton / actin binding / cellular response to oxidative stress / histone binding / cell cortex / growth cone / chemical synaptic transmission / neuron apoptotic process / negative regulation of neuron apoptotic process / transcription cis-regulatory region binding / postsynapse / amyloid fibril formation / response to lipopolysaccharide / molecular adaptor activity / oxidoreductase activity / lysosome / response to xenobiotic stimulus 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: 4.8 Å | ||||||||||||||||||||||||
データ登録者 | Balana JA / Nguyen AB / Saelices L / Pratt RM | ||||||||||||||||||||||||
資金援助 | 米国, 7件
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引用 | ジャーナル: Nat Chem Biol / 年: 2024 タイトル: O-GlcNAc forces an α-synuclein amyloid strain with notably diminished seeding and pathology. 著者: Aaron T Balana / Anne-Laure Mahul-Mellier / Binh A Nguyen / Mian Horvath / Afraah Javed / Eldon R Hard / Yllza Jasiqi / Preeti Singh / Shumaila Afrin / Rose Pedretti / Virender Singh / ...著者: Aaron T Balana / Anne-Laure Mahul-Mellier / Binh A Nguyen / Mian Horvath / Afraah Javed / Eldon R Hard / Yllza Jasiqi / Preeti Singh / Shumaila Afrin / Rose Pedretti / Virender Singh / Virginia M-Y Lee / Kelvin C Luk / Lorena Saelices / Hilal A Lashuel / Matthew R Pratt / 要旨: Amyloid-forming proteins such α-synuclein and tau, which are implicated in Alzheimer's and Parkinson's disease, can form different fibril structures or strains with distinct toxic properties, ...Amyloid-forming proteins such α-synuclein and tau, which are implicated in Alzheimer's and Parkinson's disease, can form different fibril structures or strains with distinct toxic properties, seeding activities and pathology. Understanding the determinants contributing to the formation of different amyloid features could open new avenues for developing disease-specific diagnostics and therapies. Here we report that O-GlcNAc modification of α-synuclein monomers results in the formation of amyloid fibril with distinct core structure, as revealed by cryogenic electron microscopy, and diminished seeding activity in seeding-based neuronal and rodent models of Parkinson's disease. Although the mechanisms underpinning the seeding neutralization activity of the O-GlcNAc-modified fibrils remain unclear, our in vitro mechanistic studies indicate that heat shock proteins interactions with O-GlcNAc fibril inhibit their seeding activity, suggesting that the O-GlcNAc modification may alter the interactome of the α-synuclein fibrils in ways that lead to reduce seeding activity in vivo. Our results show that posttranslational modifications, such as O-GlcNAc modification, of α-synuclein are key determinants of α-synuclein amyloid strains and pathogenicity. | ||||||||||||||||||||||||
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_29980.map.gz | 60.6 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-29980-v30.xml emd-29980.xml | 19.9 KB 19.9 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_29980_fsc.xml | 11.4 KB | 表示 | FSCデータファイル |
画像 | emd_29980.png | 61.3 KB | ||
マスクデータ | emd_29980_msk_1.map | 125 MB | マスクマップ | |
Filedesc metadata | emd-29980.cif.gz | 5.7 KB | ||
その他 | emd_29980_additional_1.map.gz emd_29980_half_map_1.map.gz emd_29980_half_map_2.map.gz | 97.9 MB 98.1 MB 98.1 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-29980 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-29980 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_29980_validation.pdf.gz | 1.1 MB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_29980_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | emd_29980_validation.xml.gz | 18.6 KB | 表示 | |
CIF形式データ | emd_29980_validation.cif.gz | 24.4 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-29980 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-29980 | HTTPS FTP |
-関連構造データ
関連構造データ | 8gf7MC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-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_29980.map.gz / 形式: CCP4 / 大きさ: 125 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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注釈 | main map. This map was used to build model | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.86 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_29980_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 |
-追加マップ: this map was reconstructed from 3Drefine step in RELION
ファイル | emd_29980_additional_1.map | ||||||||||||
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注釈 | this map was reconstructed from 3Drefine step in RELION | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: half map 2
ファイル | emd_29980_half_map_1.map | ||||||||||||
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注釈 | 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: half map 1
ファイル | emd_29980_half_map_2.map | ||||||||||||
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注釈 | half map 1 | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : alpha-synuclein fibrils
全体 | 名称: alpha-synuclein fibrils |
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要素 |
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-超分子 #1: alpha-synuclein fibrils
超分子 | 名称: alpha-synuclein fibrils / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 / 詳細: The protein is semi-synthesized. |
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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: 6 / 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: 8.781005 KDa |
配列 | 文字列: GLSKAKEGVV AAAEKTKQGV AEAAGKTKEG VLYVGSKTKE GVVHGVATVA EKTKEQVTNV GGAVVTGVTA VAQKTVEGAG SIAAATGFV K UniProtKB: Alpha-synuclein |
-分子 #2: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 2 / コピー数: 6 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ChemComp-NAG: |
-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 |
-試料調製
緩衝液 | pH: 7.4 / 詳細: normal PBS |
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グリッド | モデル: Quantifoil R1.2/1.3 / 材質: COPPER / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 30 sec. |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | 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: 2 / 実像数: 7270 / 平均露光時間: 3.6 sec. / 平均電子線量: 40.0 e/Å2 / 詳細: 3 shots per hole |
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): 0.8 µm |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |