+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8ezd | ||||||
---|---|---|---|---|---|---|---|
タイトル | Brain-derived 42-residue amyloid-beta fibril type A | ||||||
要素 | Beta-amyloid protein 42アミロイドβ | ||||||
キーワード | PROTEIN FIBRIL / amyloid-b 42 (Ab42) fibril / Alzheimer' / s disease (AD) / Polymorphism. | ||||||
機能・相同性 | 機能・相同性情報 regulation of epidermal growth factor-activated receptor activity / signaling receptor activator activity / collateral sprouting in absence of injury / cytosolic mRNA polyadenylation / microglia development / regulation of synapse structure or activity / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / synaptic assembly at neuromuscular junction / smooth endoplasmic reticulum calcium ion homeostasis ...regulation of epidermal growth factor-activated receptor activity / signaling receptor activator activity / collateral sprouting in absence of injury / cytosolic mRNA polyadenylation / microglia development / regulation of synapse structure or activity / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / synaptic assembly at neuromuscular junction / smooth endoplasmic reticulum calcium ion homeostasis / axon midline choice point recognition / astrocyte activation involved in immune response / regulation of spontaneous synaptic transmission / regulation of Wnt signaling pathway / mating behavior / 繊毛 / Lysosome Vesicle Biogenesis / PTB domain binding / Golgi-associated vesicle / positive regulation of amyloid fibril formation / neuron remodeling / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / : / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / presynaptic active zone / suckling behavior / COPII-coated ER to Golgi transport vesicle / modulation of excitatory postsynaptic potential / dendrite development / 小胞体 / regulation of NMDA receptor activity / TRAF6 mediated NF-kB activation / Advanced glycosylation endproduct receptor signaling / neuromuscular process controlling balance / regulation of presynapse assembly / The NLRP3 inflammasome / intracellular copper ion homeostasis / transition metal ion binding / regulation of multicellular organism growth / negative regulation of long-term synaptic potentiation / negative regulation of neuron differentiation / ECM proteoglycans / spindle midzone / positive regulation of T cell migration / Purinergic signaling in leishmaniasis infection / positive regulation of calcium-mediated signaling / forebrain development / regulation of peptidyl-tyrosine phosphorylation / positive regulation of chemokine production / クラスリン / Notchシグナリング / positive regulation of G2/M transition of mitotic cell cycle / ionotropic glutamate receptor signaling pathway / positive regulation of protein metabolic process / neuron projection maintenance / cholesterol metabolic process / extracellular matrix organization / positive regulation of glycolytic process / positive regulation of mitotic cell cycle / response to interleukin-1 / 軸索誘導 / adult locomotory behavior / trans-Golgi network membrane / dendritic shaft / locomotory behavior / platelet alpha granule lumen / positive regulation of peptidyl-threonine phosphorylation / 学習 / central nervous system development / positive regulation of interleukin-1 beta production / positive regulation of long-term synaptic potentiation / astrocyte activation / endosome lumen / synapse organization / Post-translational protein phosphorylation / regulation of long-term neuronal synaptic plasticity / positive regulation of JNK cascade / microglial cell activation / TAK1-dependent IKK and NF-kappa-B activation / visual learning / neuromuscular junction / serine-type endopeptidase inhibitor activity / recycling endosome / 認識 / positive regulation of inflammatory response / Golgi lumen / neuron cellular homeostasis / エンドサイトーシス / positive regulation of interleukin-6 production / positive regulation of non-canonical NF-kappaB signal transduction / cellular response to amyloid-beta / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / neuron projection development / positive regulation of DNA-binding transcription factor activity / G2/M transition of mitotic cell cycle / cell-cell junction / シナプス小胞 / positive regulation of tumor necrosis factor production / regulation of translation 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: 2.83 Å | ||||||
データ登録者 | Tycko, R. / Lee, M. / Yau, Y.-M. / Louis, J.M. | ||||||
資金援助 | 米国, 1件
| ||||||
引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2023 タイトル: Structures of brain-derived 42-residue amyloid-β fibril polymorphs with unusual molecular conformations and intermolecular interactions. 著者: Myungwoon Lee / Wai-Ming Yau / John M Louis / Robert Tycko / 要旨: Fibrils formed by the 42-residue amyloid-β peptide (Aβ42), a main component of amyloid deposits in Alzheimer's disease (AD), are known to be polymorphic, i.e., to contain multiple possible ...Fibrils formed by the 42-residue amyloid-β peptide (Aβ42), a main component of amyloid deposits in Alzheimer's disease (AD), are known to be polymorphic, i.e., to contain multiple possible molecular structures. Previous studies of Aβ42 fibrils, including fibrils prepared entirely in vitro or extracted from brain tissue and using solid-state NMR (ssNMR) or cryogenic electron microscopy (cryo-EM) methods, have found polymorphs with differences in amino acid sidechain orientations, lengths of structurally ordered segments, and contacts between cross-β subunit pairs within a single filament. Despite these differences, Aβ42 molecules adopt a common S-shaped conformation in all previously described high-resolution Aβ42 fibril structures. Here we report two cryo-EM-based structures of Aβ42 fibrils that are qualitatively different, in samples derived from AD brain tissue by seeded growth. In type A fibrils, residues 12 to 42 adopt a ν-shaped conformation, with both intra-subunit and intersubunit hydrophobic contacts to form a compact core. In type B fibrils, residues 2 to 42 adopt an υ-shaped conformation, with only intersubunit contacts and internal pores. Type A and type B fibrils have opposite helical handedness. Cryo-EM density maps and molecular dynamics simulations indicate intersubunit K16-A42 salt bridges in type B fibrils and partially occupied K28-A42 salt bridges in type A fibrils. The coexistence of two predominant polymorphs, with differences in N-terminal dynamics, is supported by ssNMR data, as is faithful propagation of structures from first-generation to second-generation brain-seeded Aβ42 fibril samples. These results demonstrate that Aβ42 fibrils can exhibit a greater range of structural variations than seen in previous studies. | ||||||
履歴 |
|
-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
---|
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8ezd.cif.gz | 639.8 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb8ezd.ent.gz | 542.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8ezd.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/ez/8ezd ftp://data.pdbj.org/pub/pdb/validation_reports/ez/8ezd | HTTPS FTP |
---|
-関連構造データ
関連構造データ | 28740MC 8ezeC C: 同じ文献を引用 (文献) M: このデータのモデリングに利用したマップデータ |
---|---|
類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
|
---|---|
1 |
|
モデル数 | 9 |
-要素
#1: タンパク質・ペプチド | 分子量: 4520.087 Da / 分子数: 8 / 断片: residues 672-713 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: APP, A4, AD1 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: P05067 |
---|
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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 |
-試料調製
構成要素 | 名称: amyloid-b 42 (Ab42) fibril / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
---|---|
分子量 | 値: 4514.10 kDa/nm / 実験値: YES |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
緩衝液 | pH: 7.4 / 詳細: 10mM Na-phosphate, 0.1% sodium azide |
緩衝液成分 | 濃度: 10 mM / 名称: Sodium Phosphate |
試料 | 濃度: 0.34 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK I / 凍結剤: ETHANE / 湿度: 99 % / 凍結前の試料温度: 93 K 詳細: Preblot for 12-13 seconds and blot for 2.5-3.0 seconds before plunging |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: FEI TITAN 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 FIELDBright-field microscopy / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 500 nm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 1.65 sec. / 電子線照射量: 44.65 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 3383 |
画像スキャン | 横: 11520 / 縦: 8184 / 動画フレーム数/画像: 22 |
-解析
EMソフトウェア |
| ||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
画像処理 | 詳細: Gatan Imaging Filter (GIF) Quantum LS | ||||||||||||||||||||||||||||||||||||||||||||
CTF補正 | 詳細: CTFFIND-4 / タイプ: NONE | ||||||||||||||||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: -179.09 ° / 軸方向距離/サブユニット: 2.46 Å / らせん対称軸の対称性: C1 | ||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 374821 | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.83 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 68481 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: OTHER 詳細: Manually generated model was fit into the density using PHENIX and UCSF Chimera. Further refinements were performed using Xplor-NIH. |