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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9k0f | ||||||
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| タイトル | Cryo-EM structure of Amyloid-beta42-4b polymorph 3 | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / helical fibril / amyloid-beta / PROTEIN FIBRIL | ||||||
| 機能・相同性 | 機能・相同性情報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 / axo-dendritic transport / regulation of Wnt signaling pathway / regulation of synapse structure or activity ...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 / axo-dendritic transport / regulation of Wnt signaling pathway / regulation of synapse structure or activity / 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 / positive regulation of amyloid fibril formation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / Lysosome Vesicle Biogenesis / astrocyte projection / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / dendrite development / positive regulation of protein metabolic process / TRAF6 mediated NF-kB activation / Advanced glycosylation endproduct receptor signaling / signaling receptor activator activity / negative regulation of long-term synaptic potentiation / modulation of excitatory postsynaptic potential / The NLRP3 inflammasome / main axon / transition metal ion binding / intracellular copper ion homeostasis / regulation of multicellular organism growth / ECM proteoglycans / regulation of presynapse assembly / 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 / Notch signaling pathway / clathrin-coated pit / extracellular matrix organization / neuron projection maintenance / Mitochondrial protein degradation / astrocyte activation / ionotropic glutamate receptor signaling pathway / positive regulation of calcium-mediated signaling / positive regulation of mitotic cell cycle / axonogenesis / protein serine/threonine kinase binding / response to interleukin-1 / platelet alpha granule lumen / cellular response to copper ion / cellular response to cAMP / positive regulation of glycolytic process / central nervous system development / endosome lumen / positive regulation of interleukin-1 beta production / dendritic shaft / trans-Golgi network membrane / positive regulation of long-term synaptic potentiation / adult locomotory behavior / learning / positive regulation of JNK cascade / Post-translational protein phosphorylation / locomotory behavior / serine-type endopeptidase inhibitor activity / microglial cell activation / positive regulation of non-canonical NF-kappaB signal transduction / TAK1-dependent IKK and NF-kappa-B activation / regulation of long-term neuronal synaptic plasticity / cellular response to nerve growth factor stimulus / recycling endosome / synapse organization / visual learning / response to lead ion / positive regulation of interleukin-6 production / Golgi lumen / cognition / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / endocytosis / cellular response to amyloid-beta / neuron projection development / positive regulation of inflammatory response / positive regulation of tumor necrosis factor production / Platelet degranulation / heparin binding / regulation of translation / growth cone / regulation of gene expression / early endosome membrane / G alpha (i) signalling events / perikaryon / G alpha (q) signalling events 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト) | ||||||
| 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: 2.8 Å | ||||||
データ登録者 | Xia, W.C. / Sun, Y.P. / Liu, C. | ||||||
| 資金援助 | 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: An O-glycopeptide participates in the formation of distinct Aβ fibril structures and attenuates Aβ neurotoxicity. 著者: Qijia Wei / Dangliang Liu / Wencheng Xia / Fengzhang Wang / Lu Huang / Jun Zhang / Xiaoya Wang / Zhongxin Xu / Changdong He / Wenzhe Li / Xiaomeng Shi / Chu Wang / Yuan Liu / Cong Liu / Suwei Dong / ![]() 要旨: The self-assembly of biomolecules through noncovalent interactions is critical in both physiological and pathological processes, as exemplified by the assembly of amyloid β peptide (Aβ) into ...The self-assembly of biomolecules through noncovalent interactions is critical in both physiological and pathological processes, as exemplified by the assembly of amyloid β peptide (Aβ) into oligomers or fibrils in Alzheimer's disease (AD). Developing molecules that can modulate this assembly process holds significant mechanistic and therapeutic potential. In this study, we identified glycopeptides as a class of protein aggregation modulators, showing that β-N-acetylgalactosamine (β-GalNAc)-modified Aβ promotes Aβ fibrillation while reducing its toxic oligomers. Using biochemical assays, cryo-EM, and molecular dynamics simulations, we demonstrated that β-GalNAc-modified Aβ coassembles with Aβ, forming unique fibril structures stabilized by both hydrophobic interactions and an organized hydrogen bond network facilitated by the glycopeptide. Importantly, β-GalNAc-modified Aβ can alleviate the neurotoxicity of Aβ in neuronal cells and an AD male mouse model. These findings underscore the potential of glycopeptides in regulating amyloid aggregation and provide structural insights for designing molecules targeting amyloid-related pathologies. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9k0f.cif.gz | 57.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9k0f.ent.gz | 42 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9k0f.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| 文書・要旨 | 9k0f_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9k0f_full_validation.pdf.gz | 1 MB | 表示 | |
| XML形式データ | 9k0f_validation.xml.gz | 28.5 KB | 表示 | |
| CIF形式データ | 9k0f_validation.cif.gz | 39.8 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/k0/9k0f ftp://data.pdbj.org/pub/pdb/validation_reports/k0/9k0f | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 61946MC ![]() 9k0dC ![]() 9k0eC 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 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
| #1: タンパク質・ペプチド | 分子量: 4520.087 Da / 分子数: 9 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) / 参照: UniProt: B4DMD5#2: タンパク質・ペプチド | 分子量: 1577.802 Da / 分子数: 3 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) / 参照: UniProt: P05067#3: 水 | ChemComp-HOH / | 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: Cryo-EM structure of Amyloid-beta42-4b polymorph 3 / タイプ: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1-#2 / 由来: NATURAL |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 7.4 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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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: TFS KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 55 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOCONTINUUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.15.2_3472: / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
| らせん対称 | 回転角度/サブユニット: -0.76 ° / 軸方向距離/サブユニット: 4.82 Å / らせん対称軸の対称性: C1 | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 24373 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
引用






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FIELD EMISSION GUN