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基本情報
登録情報 | データベース: EMDB / ID: EMD-0405 | |||||||||||||||
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タイトル | Amyloid-Beta (20-34) with L-isoaspartate 23 | |||||||||||||||
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![]() | protofilament / 2 sub 1 screw symmetry / post-translational modification / isoaspartate / PROTEIN FIBRIL | |||||||||||||||
機能・相同性 | ![]() amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / growth cone filopodium / microglia development / collateral sprouting in absence of injury / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of synapse structure or activity / axo-dendritic transport / regulation of Wnt signaling pathway ...amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / growth cone filopodium / microglia development / collateral sprouting in absence of injury / Formyl peptide receptors bind formyl peptides and many other ligands / regulation of synapse structure or activity / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition / astrocyte activation involved in immune response / NMDA selective glutamate receptor signaling pathway / regulation of spontaneous synaptic transmission / mating behavior / growth factor receptor binding / peptidase activator activity / Golgi-associated vesicle / PTB domain binding / Lysosome Vesicle Biogenesis / positive regulation of amyloid fibril formation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / astrocyte projection / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / positive regulation of protein metabolic process / dendrite development / TRAF6 mediated NF-kB activation / modulation of excitatory postsynaptic potential / Advanced glycosylation endproduct receptor signaling / signaling receptor activator activity / The NLRP3 inflammasome / negative regulation of long-term synaptic potentiation / main axon / transition metal ion binding / regulation of multicellular organism growth / intracellular copper ion homeostasis / regulation of presynapse assembly / ECM proteoglycans / positive regulation of T cell migration / neuronal dense core vesicle / Purinergic signaling in leishmaniasis infection / positive regulation of chemokine production / cellular response to manganese ion / clathrin-coated pit / Notch signaling pathway / extracellular matrix organization / neuron projection maintenance / Mitochondrial protein degradation / astrocyte activation / ionotropic glutamate receptor signaling pathway / axonogenesis / response to interleukin-1 / positive regulation of mitotic cell cycle / positive regulation of calcium-mediated signaling / protein serine/threonine kinase binding / cellular response to copper ion / platelet alpha granule lumen / cellular response to cAMP / positive regulation of glycolytic process / adult locomotory behavior / central nervous system development / positive regulation of long-term synaptic potentiation / positive regulation of interleukin-1 beta production / trans-Golgi network membrane / endosome lumen / dendritic shaft / TAK1-dependent IKK and NF-kappa-B activation / learning / positive regulation of JNK cascade / Post-translational protein phosphorylation / locomotory behavior / microglial cell activation / serine-type endopeptidase inhibitor activity / regulation of long-term neuronal synaptic plasticity / positive regulation of non-canonical NF-kappaB signal transduction / synapse organization / cellular response to nerve growth factor stimulus / visual learning / recycling endosome / response to lead ion / positive regulation of interleukin-6 production / Golgi lumen / cognition / endocytosis / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of inflammatory response / cellular response to amyloid-beta / neuron projection development / positive regulation of tumor necrosis factor production / Platelet degranulation / heparin binding / regulation of gene expression / regulation of translation / early endosome membrane / G alpha (i) signalling events / perikaryon / G alpha (q) signalling events / dendritic spine 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() | |||||||||||||||
手法 | 電子線結晶学 / クライオ電子顕微鏡法 | |||||||||||||||
![]() | Sawaya MR / Warmack RA | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of amyloid-β (20-34) with Alzheimer's-associated isomerization at Asp23 reveals a distinct protofilament interface. 著者: Rebeccah A Warmack / David R Boyer / Chih-Te Zee / Logan S Richards / Michael R Sawaya / Duilio Cascio / Tamir Gonen / David S Eisenberg / Steven G Clarke / ![]() 要旨: Amyloid-β (Aβ) harbors numerous posttranslational modifications (PTMs) that may affect Alzheimer's disease (AD) pathogenesis. Here we present the 1.1 Å resolution MicroED structure of an Aβ 20- ...Amyloid-β (Aβ) harbors numerous posttranslational modifications (PTMs) that may affect Alzheimer's disease (AD) pathogenesis. Here we present the 1.1 Å resolution MicroED structure of an Aβ 20-34 fibril with and without the disease-associated PTM, L-isoaspartate, at position 23 (L-isoAsp23). Both wild-type and L-isoAsp23 protofilaments adopt β-helix-like folds with tightly packed cores, resembling the cores of full-length fibrillar Aβ structures, and both self-associate through two distinct interfaces. One of these is a unique Aβ interface strengthened by the isoaspartyl modification. Powder diffraction patterns suggest a similar structure may be adopted by protofilaments of an analogous segment containing the heritable Iowa mutation, Asp23Asn. Consistent with its early onset phenotype in patients, Asp23Asn accelerates aggregation of Aβ 20-34, as does the L-isoAsp23 modification. These structures suggest that the enhanced amyloidogenicity of the modified Aβ segments may also reduce the concentration required to achieve nucleation and therefore help spur the pathogenesis of AD. | |||||||||||||||
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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マップデータ | ![]() | 435.1 KB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 13.3 KB 13.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 302 KB | ||
Filedesc metadata | ![]() | 5.4 KB | ||
Filedesc structureFactors | ![]() | 103.2 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 353.9 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 353.5 KB | 表示 | |
XML形式データ | ![]() | 4.3 KB | 表示 | |
CIF形式データ | ![]() | 4.8 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 | ![]() 6nb9MC ![]() 6oizC 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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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 これらの図は立方格子座標系で作成されたものです | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X: 0.2704 Å / Y: 0.2435 Å / Z: 0.2923 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : crystal of amyloid-beta residues 20-34 with L-isoaspartate at pos...
全体 | 名称: crystal of amyloid-beta residues 20-34 with L-isoaspartate at position 23 |
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要素 |
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-超分子 #1: crystal of amyloid-beta residues 20-34 with L-isoaspartate at pos...
超分子 | 名称: crystal of amyloid-beta residues 20-34 with L-isoaspartate at position 23 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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分子量 | 理論値: 6.21 kDa/nm |
-分子 #1: Amyloid-beta A4 protein
分子 | 名称: Amyloid-beta A4 protein / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 1.491666 KDa |
配列 | 文字列: FAE(IAS)VGSNKG AIIGL UniProtKB: Amyloid-beta precursor protein |
-分子 #2: water
分子 | 名称: water / タイプ: ligand / ID: 2 / コピー数: 4 / 式: HOH |
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分子量 | 理論値: 18.015 Da |
Chemical component information | ![]() ChemComp-HOH: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 電子線結晶学 |
試料の集合状態 | 3D array |
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試料調製
濃度 | 2.5 mg/mL |
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緩衝液 | pH: 7.6 / 構成要素 - 名称: water |
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 ARRAY / 支持フィルム - Film thickness: 30 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 30 sec. / 前処理 - 雰囲気: AIR |
凍結 | 凍結剤: ETHANE / チャンバー内温度: 100 K / 装置: FEI VITROBOT MARK IV |
詳細 | This sample is a crystal. |
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電子顕微鏡法
顕微鏡 | FEI TALOS ARCTICA |
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温度 | 最低: 100.0 K / 最高: 100.0 K |
撮影 | フィルム・検出器のモデル: FEI CETA (4k x 4k) / デジタル化 - サイズ - 横: 2048 pixel / デジタル化 - サイズ - 縦: 2048 pixel / 撮影したグリッド数: 2 / 回折像の数: 159 / 平均露光時間: 3.0 sec. / 平均電子線量: 0.01 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: DIFFRACTION / カメラ長: 1050 mm |
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: Talos Arctica / 画像提供: FEI Company |
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画像解析
最終 再構成 | 解像度の算出法: DIFFRACTION PATTERN/LAYERLINES |
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Crystallography statistics | Number intensities measured: 16529 / Number structure factors: 3946 / Fourier space coverage: 82.7 / R sym: 0.197 / R merge: 0.197 / Overall phase error: 28.4 / Overall phase residual: 0.1 / Phase error rejection criteria: 0.1 / High resolution: 1.05 Å / 殻 - Shell ID: 1 / 殻 - High resolution: 1.0 Å / 殻 - Low resolution: 1.05 Å / 殻 - Number structure factors: 315 / 殻 - Phase residual: 0.1 / 殻 - Fourier space coverage: 41.2 / 殻 - Multiplicity: 3.09 |
-原子モデル構築 1
精密化 | 空間: RECIPROCAL / プロトコル: OTHER / 温度因子: 10.135 / 当てはまり具合の基準: maximum liklihood |
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得られたモデル | ![]() PDB-6nb9: |