+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8wzx | ||||||||||||
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タイトル | Cryo-EM structure of the hamster prion 23-144 fibril at pH 3.7 | ||||||||||||
要素 | Major prion protein | ||||||||||||
キーワード | PROTEIN FIBRIL / prion / 23-144 / hamster / PrP | ||||||||||||
機能・相同性 | 機能・相同性情報 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 / negative regulation of interleukin-17 production / type 5 metabotropic glutamate receptor binding / cupric ion binding / regulation of potassium ion transmembrane transport / negative regulation of calcineurin-NFAT signaling cascade ...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 / negative regulation of interleukin-17 production / type 5 metabotropic glutamate receptor binding / cupric ion binding / regulation of potassium ion transmembrane transport / negative regulation of calcineurin-NFAT signaling cascade / negative regulation of T cell receptor signaling pathway / negative regulation of interleukin-2 production / negative regulation of amyloid-beta formation / negative regulation of activated T cell proliferation / cuprous ion binding / negative regulation of type II interferon production / positive regulation of protein targeting to membrane / side of membrane / inclusion body / cellular response to copper ion / neuron projection maintenance / negative regulation of protein phosphorylation / molecular function activator activity / positive regulation of protein localization to plasma membrane / molecular condensate scaffold activity / protein destabilization / 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 / presynapse / signaling receptor activity / amyloid-beta binding / microtubule binding / protease binding / nuclear membrane / response to oxidative stress / amyloid fibril formation / learning or memory / regulation of cell cycle / membrane raft / copper ion binding / dendrite / protein-containing complex binding / negative regulation of apoptotic process / Golgi apparatus / cell surface / endoplasmic reticulum / identical protein binding / plasma membrane / cytosol 類似検索 - 分子機能 | ||||||||||||
生物種 | Mesocricetus auratus (ネズミ) | ||||||||||||
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: 2.88 Å | ||||||||||||
データ登録者 | Lee, C.-H. / Saw, J.-E. / Chen, E. / Wang, C.-H. / Chen, R. | ||||||||||||
資金援助 | 台湾, 3件
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引用 | ジャーナル: J Mol Biol / 年: 2024 タイトル: The Positively Charged Cluster in the N-terminal Disordered Region may Affect Prion Protein Misfolding: Cryo-EM Structure of Hamster PrP(23-144) Fibrils. 著者: Chih-Hsuan Lee / Jing-Ee Saw / Eric H-L Chen / Chun-Hsiung Wang / Takayuki Uchihashi / Rita P-Y Chen / 要旨: Prions, the misfolding form of prion proteins, are contagious proteinaceous macromolecules. Recent studies have shown that infectious prion fibrils formed in the brain and non-infectious fibrils ...Prions, the misfolding form of prion proteins, are contagious proteinaceous macromolecules. Recent studies have shown that infectious prion fibrils formed in the brain and non-infectious fibrils formed from recombinant prion protein in a partially denaturing condition have distinct structures. The amyloid core of the in vitro-prepared non-infectious fibrils starts at about residue 160, while that of infectious prion fibrils formed in the brain involves a longer sequence (residues ∼90-230) of structural conversion. The C-terminal truncated prion protein PrP(23-144) can form infectious fibrils under certain conditions and cause disease in animals. In this study, we used cryogenic electron microscopy (cryo-EM) to resolve the structure of hamster sHaPrP(23-144) fibrils prepared at pH 3.7. This 2.88 Å cryo-EM structure has an amyloid core covering residues 94-144. It comprises two protofilaments, each containing five β-strands arranged as a long hairpin plus an N-terminal β-strand. This N-terminal β-strand resides in a positively charged cluster region (named PCC2; sequence 96-111), which interacts with the turn region of the opposite protofilaments' hairpin to stabilize the fibril structure. Interestingly, this sHaPrP(23-144) fibril structure differs from a recently reported structure formed by the human or mouse counterpart at pH 6.5. Moreover, sHaPrP(23-144) fibrils have many structural features in common with infectious prions. Whether this structure is infectious remains to be determined. More importantly, the sHaPrP(23-144) structure is different from the sHaPrP(108-144) fibrils prepared in the same fibrillization buffer, indicating that the N-terminal disordered region, possibly the positively charged cluster, influences the misfolding pathway of the prion protein. | ||||||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8wzx.cif.gz | 181.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8wzx.ent.gz | 139.3 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8wzx.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 | 8wzx_validation.pdf.gz | 1.1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8wzx_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | 8wzx_validation.xml.gz | 36.4 KB | 表示 | |
CIF形式データ | 8wzx_validation.cif.gz | 58.1 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/wz/8wzx ftp://data.pdbj.org/pub/pdb/validation_reports/wz/8wzx | HTTPS FTP |
-関連構造データ
関連構造データ | 37963MC 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 (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
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 12376.642 Da / 分子数: 20 / 由来タイプ: 組換発現 / 由来: (組換発現) Mesocricetus auratus (ネズミ) / 遺伝子: PRNP / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: P04273 |
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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 |
-試料調製
構成要素 | 名称: hamster prion 23-144 fibril / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: Mesocricetus auratus (ネズミ) |
由来(組換発現) | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
緩衝液 | pH: 3.7 / 詳細: 20 mM NaOAc, 140 mM NaCl |
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 |
-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): 1400 nm |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||
らせん対称 |
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3次元再構成 | 解像度: 2.88 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 288368 / 対称性のタイプ: HELICAL | ||||||||||||||||||
原子モデル構築 | B value: 101.7 / プロトコル: AB INITIO MODEL / 空間: REAL |