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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: 8efu | ||||||
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タイトル | a22L prion fibril | ||||||
![]() | Major prion protein | ||||||
![]() | PROTEIN FIBRIL / Prion / Fibril / GPI-anchorless / PrP / Infectious / Amyloid / Brain-derived / ex vivo / Prion strain | ||||||
機能・相同性 | ![]() 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 / glycosaminoglycan binding / ATP-dependent protein binding / regulation of potassium ion transmembrane transport / 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 / glycosaminoglycan binding / ATP-dependent protein binding / regulation of potassium ion transmembrane transport / negative regulation of interleukin-17 production / negative regulation of dendritic spine maintenance / type 5 metabotropic glutamate receptor binding / cupric ion binding / 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 / cuprous ion binding / negative regulation of amyloid-beta formation / negative regulation of activated T cell proliferation / regulation of peptidyl-tyrosine phosphorylation / 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 / side of membrane / response to cadmium ion / inclusion body / cellular response to copper ion / neuron projection maintenance / positive regulation of calcium-mediated signaling / positive regulation of protein localization to plasma membrane / molecular condensate scaffold activity / negative regulation of protein phosphorylation / molecular function activator activity / protein destabilization / protein homooligomerization / negative regulation of DNA-binding transcription factor activity / terminal bouton / cellular response to xenobiotic stimulus / cellular response to amyloid-beta / positive regulation of peptidyl-tyrosine phosphorylation / regulation of protein localization / positive regulation of neuron apoptotic process / signaling receptor activity / amyloid-beta binding / protein-folding chaperone binding / nuclear membrane / microtubule binding / protease binding / response to oxidative stress / transmembrane transporter binding / learning or memory / molecular adaptor activity / postsynaptic density / membrane raft / copper ion binding / dendrite / negative regulation of apoptotic process / protein-containing complex binding / cell surface / Golgi apparatus / endoplasmic reticulum / identical protein binding / membrane / metal ion binding / plasma membrane / cytosol 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
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: 3.2 Å | ||||||
![]() | Hoyt, F. / Caughey, B. | ||||||
資金援助 | ![]()
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![]() | ![]() 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
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 141 KB | 表示 | ![]() |
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PDB形式 | ![]() | 112.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 36.7 KB | 表示 | |
CIF形式データ | ![]() | 52.3 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 | ![]() 28089MC 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 ![]() |
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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 | 分子量: 25550.348 Da / 分子数: 5 / 変異: S233Stop / 由来タイプ: 天然 / 由来: (天然) ![]() ![]() |
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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: GPI anchorless underglycosylated 22L prion fibril / タイプ: COMPLEX / Entity ID: all / 由来: NATURAL |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() ![]() |
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 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: C-flat-1.2/1.3 |
急速凍結 | 装置: LEICA EM GP / 凍結剤: ETHANE / 湿度: 90 % / 凍結前の試料温度: 295 K |
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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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 81000 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 | 電子線照射量: 57 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 実像数: 4449 |
電子光学装置 | 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 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: -0.565 ° / 軸方向距離/サブユニット: 4.75 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: 226306 | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 16409 詳細: Pixel size was corrected in post processing from 1.1 A/pix to 1.045 A/pix to correct an error in the reported magnification pixel size. 対称性のタイプ: HELICAL | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL |