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基本情報
| 登録情報 | データベース: PDB / ID: 9k0e | ||||||
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| タイトル | Cryo-EM structure of Amyloid-beta42-4b polymorph 2 | ||||||
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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 / collateral sprouting in absence of injury / growth cone filopodium / microglia development / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition ...amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / collateral sprouting in absence of injury / growth cone filopodium / microglia development / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition / regulation of synapse structure or activity / hippocampal neuron apoptotic process / 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 / PTB domain binding / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / positive regulation of amyloid fibril formation / Golgi-associated vesicle / astrocyte projection / Lysosome Vesicle Biogenesis / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / dendrite development / TRAF6 mediated NF-kB activation / positive regulation of protein metabolic process / signaling receptor activator activity / negative regulation of long-term synaptic potentiation / Advanced glycosylation endproduct receptor signaling / transition metal ion binding / The NLRP3 inflammasome / regulation of multicellular organism growth / main axon / modulation of excitatory postsynaptic potential / intracellular copper ion homeostasis / ECM proteoglycans / response to insulin-like growth factor stimulus / positive regulation of T cell migration / regulation of presynapse assembly / neuronal dense core vesicle / Purinergic signaling in leishmaniasis infection / cellular response to manganese ion / positive regulation of chemokine production / Notch signaling pathway / swimming behavior / extracellular matrix organization / neuron projection maintenance / clathrin-coated pit / astrocyte activation / axonogenesis / positive regulation of mitotic cell cycle / Mitochondrial protein degradation / positive regulation of calcium-mediated signaling / ionotropic glutamate receptor signaling pathway / platelet alpha granule lumen / regulation of neuron apoptotic process / response to interleukin-1 / cellular response to cAMP / cellular response to copper ion / positive regulation of glycolytic process / endosome lumen / positive regulation of long-term synaptic potentiation / dendritic shaft / trans-Golgi network membrane / central nervous system development / positive regulation of interleukin-1 beta production / protein serine/threonine kinase binding / learning / adult locomotory behavior / Post-translational protein phosphorylation / serine-type endopeptidase inhibitor activity / locomotory behavior / microglial cell activation / cellular response to nerve growth factor stimulus / TAK1-dependent IKK and NF-kappa-B activation / positive regulation of non-canonical NF-kappaB signal transduction / visual learning / synapse organization / regulation of long-term neuronal synaptic plasticity / recycling endosome / positive regulation of interleukin-6 production / response to lead ion / positive regulation of JNK cascade / Golgi lumen / cognition / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / cellular response to amyloid-beta / endocytosis / positive regulation of tumor necrosis factor production / neuron projection development / positive regulation of inflammatory response / calcium ion transport / Platelet degranulation / regulation of translation / heparin binding / growth cone 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 | 9k0e.cif.gz | 52.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9k0e.ent.gz | 37.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9k0e.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/k0/9k0e ftp://data.pdbj.org/pub/pdb/validation_reports/k0/9k0e | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 61945MC ![]() 9k0dC ![]() 9k0fC 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: 6 / 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: 6 / 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 2 / 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: 179.66 ° / 軸方向距離/サブユニット: 2.42 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: 62839 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||
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万見について




Homo sapiens (ヒト)
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