+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-28089 | |||||||||
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タイトル | a22L prion fibril | |||||||||
マップデータ | Post processed, real space averaged map of anchorless 22L prion fibril | |||||||||
試料 |
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機能・相同性 | 機能・相同性情報 Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / negative regulation of amyloid precursor protein catabolic process / lamin binding / regulation of glutamate receptor signaling pathway / regulation of calcium ion import across plasma membrane / aspartic-type endopeptidase inhibitor activity / negative regulation of dendritic spine maintenance / glycosaminoglycan binding / ATP-dependent protein binding / negative regulation of interleukin-17 production ...Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / negative regulation of amyloid precursor protein catabolic process / lamin binding / regulation of glutamate receptor signaling pathway / regulation of calcium ion import across plasma membrane / aspartic-type endopeptidase inhibitor activity / negative regulation of dendritic spine maintenance / glycosaminoglycan binding / ATP-dependent protein binding / negative regulation of interleukin-17 production / type 5 metabotropic glutamate receptor binding / cupric ion binding / regulation of potassium ion transmembrane transport / nucleobase-containing compound metabolic process / response to copper ion / negative regulation of calcineurin-NFAT signaling cascade / negative regulation of T cell receptor signaling pathway / negative regulation of interleukin-2 production / activation of protein kinase activity / negative regulation of amyloid-beta formation / negative regulation of activated T cell proliferation / cuprous ion binding / response to amyloid-beta / negative regulation of type II interferon production / negative regulation of long-term synaptic potentiation / intracellular copper ion homeostasis / positive regulation of protein targeting to membrane / response to cadmium ion / side of membrane / regulation of peptidyl-tyrosine phosphorylation / inclusion body / cellular response to copper ion / neuron projection maintenance / positive regulation of calcium-mediated signaling / negative regulation of protein phosphorylation / molecular function activator activity / positive regulation of protein localization to plasma membrane / molecular condensate scaffold activity / protein destabilization / negative regulation of DNA-binding transcription factor activity / protein homooligomerization / terminal bouton / positive regulation of neuron apoptotic process / cellular response to amyloid-beta / positive regulation of peptidyl-tyrosine phosphorylation / cellular response to xenobiotic stimulus / regulation of protein localization / protein-folding chaperone binding / signaling receptor activity / amyloid-beta binding / microtubule binding / protease binding / nuclear membrane / transmembrane transporter binding / response to oxidative stress / molecular adaptor activity / postsynaptic density / learning or memory / membrane raft / copper ion binding / dendrite / protein-containing complex binding / negative regulation of apoptotic process / Golgi apparatus / cell surface / endoplasmic reticulum / identical protein binding / membrane / metal ion binding / plasma membrane / cytosol 類似検索 - 分子機能 | |||||||||
生物種 | Mus musculus (ハツカネズミ) / house mouse (ハツカネズミ) | |||||||||
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: 3.2 Å | |||||||||
データ登録者 | Hoyt F / Caughey B | |||||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: PLoS Pathog / 年: 2022 タイトル: Cryo-EM of prion strains from the same genotype of host identifies conformational determinants. 著者: Forrest Hoyt / Parvez Alam / Efrosini Artikis / Cindi L Schwartz / Andrew G Hughson / Brent Race / Chase Baune / Gregory J Raymond / Gerald S Baron / Allison Kraus / Byron Caughey / 要旨: Prion strains in a given type of mammalian host are distinguished by differences in clinical presentation, neuropathological lesions, survival time, and characteristics of the infecting prion protein ...Prion strains in a given type of mammalian host are distinguished by differences in clinical presentation, neuropathological lesions, survival time, and characteristics of the infecting prion protein (PrP) assemblies. Near-atomic structures of prions from two host species with different PrP sequences have been determined but comparisons of distinct prion strains of the same amino acid sequence are needed to identify purely conformational determinants of prion strain characteristics. Here we report a 3.2 Å resolution cryogenic electron microscopy-based structure of the 22L prion strain purified from the brains of mice engineered to express only PrP lacking glycophosphatidylinositol anchors [anchorless (a) 22L]. Comparison of this near-atomic structure to our recently determined structure of the aRML strain propagated in the same inbred mouse reveals that these two mouse prion strains have distinct conformational templates for growth via incorporation of PrP molecules of the same sequence. Both a22L and aRML are assembled as stacks of PrP molecules forming parallel in-register intermolecular β-sheets and intervening loops, with single monomers spanning the ordered fibril core. Each monomer shares an N-terminal steric zipper, three major arches, and an overall V-shape, but the details of these and other conformational features differ markedly. Thus, variations in shared conformational motifs within a parallel in-register β-stack fibril architecture provide a structural basis for prion strain differentiation within a single host genotype. | |||||||||
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_28089.map.gz | 9.6 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-28089-v30.xml emd-28089.xml | 16.5 KB 16.5 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_28089_fsc.xml | 13.6 KB | 表示 | FSCデータファイル |
画像 | emd_28089.png | 65.6 KB | ||
その他 | emd_28089_half_map_1.map.gz emd_28089_half_map_2.map.gz | 171.9 MB 171.9 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-28089 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-28089 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_28089_validation.pdf.gz | 778 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_28089_full_validation.pdf.gz | 777.5 KB | 表示 | |
XML形式データ | emd_28089_validation.xml.gz | 22.1 KB | 表示 | |
CIF形式データ | emd_28089_validation.cif.gz | 27.4 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28089 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28089 | HTTPS FTP |
-関連構造データ
関連構造データ | 8efuMC 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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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_28089.map.gz / 形式: CCP4 / 大きさ: 216 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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注釈 | Post processed, real space averaged map of anchorless 22L prion fibril | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.045 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
-ハーフマップ: EM half map for anchorless 22L prion fibril
ファイル | emd_28089_half_map_1.map | ||||||||||||
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注釈 | EM half map for anchorless 22L prion fibril | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: EM half map for anchorless 22L prion fibril
ファイル | emd_28089_half_map_2.map | ||||||||||||
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注釈 | EM half map for anchorless 22L prion fibril | ||||||||||||
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 : GPI anchorless underglycosylated 22L prion fibril
全体 | 名称: GPI anchorless underglycosylated 22L prion fibril |
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要素 |
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-超分子 #1: GPI anchorless underglycosylated 22L prion fibril
超分子 | 名称: GPI anchorless underglycosylated 22L prion fibril / タイプ: complex / キメラ: Yes / ID: 1 / 親要素: 0 / 含まれる分子: all |
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由来(天然) | 生物種: Mus musculus (ハツカネズミ) / 器官: Brain |
-分子 #1: Major prion protein
分子 | 名称: Major prion protein / タイプ: protein_or_peptide / ID: 1 / コピー数: 5 / 光学異性体: LEVO |
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由来(天然) | 生物種: house mouse (ハツカネズミ) |
分子量 | 理論値: 25.550348 KDa |
配列 | 文字列: MANLGYWLLA LFVTMWTDVG LCKKRPKPGG WNTGGSRYPG QGSPGGNRYP PQGGTWGQPH GGGWGQPHGG SWGQPHGGSW GQPHGGGWG QGGGTHNQWN KPSKPKTNLK HVAGAAAAGA VVGGLGGYML GSAMSRPMIH FGNDWEDRYY RENMYRYPNQ V YYRPVDQY ...文字列: MANLGYWLLA LFVTMWTDVG LCKKRPKPGG WNTGGSRYPG QGSPGGNRYP PQGGTWGQPH GGGWGQPHGG SWGQPHGGSW GQPHGGGWG QGGGTHNQWN KPSKPKTNLK HVAGAAAAGA VVGGLGGYML GSAMSRPMIH FGNDWEDRYY RENMYRYPNQ V YYRPVDQY SNQNNFVHDC VNITIKQHTV TTTTKGENFT ETDVKMMERV VEQMCVTQYQ KESQAYYDGR RSS |
-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: Sample suspended in 20 mM Tris pH 7.4, 100 mM containing 0.02% amphipol 8-35 |
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グリッド | モデル: C-flat-1.2/1.3 / 材質: COPPER / メッシュ: 300 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 雰囲気: OTHER |
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 295 K / 装置: LEICA EM GP |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | エネルギーフィルター - 名称: GIF Bioquantum / エネルギーフィルター - スリット幅: 20 eV |
撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 実像数: 4449 / 平均電子線量: 57.0 e/Å2 |
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): 3.0 µm / 最小 デフォーカス(公称値): 0.5 µm / 倍率(公称値): 81000 |
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: Titan Krios / 画像提供: FEI Company |
+画像解析
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: AB INITIO MODEL |
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得られたモデル | PDB-8efu: |