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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: 9hge | ||||||
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| タイトル | PB1 domain of p62/SQSTM1 | ||||||
要素 | Sequestosome-1 | ||||||
キーワード | PROTEIN FIBRIL / autophagy / filaments / helical reconstruction | ||||||
| 機能・相同性 | 機能・相同性情報protein localization to perinuclear region of cytoplasm / brown fat cell proliferation / protein targeting to vacuole involved in autophagy / regulation of Ras protein signal transduction / intracellular membraneless organelle / aggrephagy / response to mitochondrial depolarisation / negative regulation of toll-like receptor 4 signaling pathway / amphisome / regulation of protein complex stability ...protein localization to perinuclear region of cytoplasm / brown fat cell proliferation / protein targeting to vacuole involved in autophagy / regulation of Ras protein signal transduction / intracellular membraneless organelle / aggrephagy / response to mitochondrial depolarisation / negative regulation of toll-like receptor 4 signaling pathway / amphisome / regulation of protein complex stability / endosome organization / autophagy of mitochondrion / pexophagy / membraneless organelle assembly / phagophore assembly site / regulation of mitochondrion organization / ubiquitin-modified protein reader activity / regulation of canonical NF-kappaB signal transduction / Nuclear events mediated by NFE2L2 / aggresome / endosomal transport / K63-linked polyubiquitin modification-dependent protein binding / cellular response to stress / Lewy body / temperature homeostasis / autolysosome / negative regulation of ferroptosis / molecular sequestering activity / immune system process / mitophagy / energy homeostasis / inclusion body / signaling adaptor activity / negative regulation of protein ubiquitination / positive regulation of autophagy / autophagosome / ionotropic glutamate receptor binding / p75NTR recruits signalling complexes / SH2 domain binding / NF-kB is activated and signals survival / Pexophagy / NRIF signals cell death from the nucleus / response to ischemia / protein kinase C binding / positive regulation of long-term synaptic potentiation / PINK1-PRKN Mediated Mitophagy / sarcomere / protein catabolic process / positive regulation of protein localization to plasma membrane / ubiquitin binding / macroautophagy / P-body / protein sequestering activity / molecular condensate scaffold activity / PML body / receptor tyrosine kinase binding / autophagy / Interleukin-1 signaling / protein import into nucleus / Signaling by ALK fusions and activated point mutants / intracellular protein localization / KEAP1-NFE2L2 pathway / late endosome / Neddylation / signaling receptor activity / sperm midpiece / transcription by RNA polymerase II / ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / cell differentiation / intracellular signal transduction / positive regulation of apoptotic process / apoptotic process / ubiquitin protein ligase binding / protein kinase binding / protein-containing complex binding / glutamatergic synapse / enzyme binding / negative regulation of transcription by RNA polymerase II / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / mitochondrion / extracellular exosome / zinc ion binding / nucleoplasm / identical protein binding / cytoplasm / cytosol 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: 4.5 Å | ||||||
データ登録者 | Berkamp, S. / Jungbluth, L. / Katranidis, A. / Mostafavi, S. / Sachse, C. | ||||||
| 資金援助 | European Union, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structural organization of p62 filaments and the cellular ultrastructure of calcium-rich p62-enwrapped lipid droplet cargo. 著者: Sabrina Berkamp / Lisa Jungbluth / Alexandros Katranidis / Siavash Mostafavi / Olivera Korculanin / Peng-Han Lu / Lotte Ickert / Maya M Dierig / Lokesh Sharma / Lipi Thukral / Pitter F ...著者: Sabrina Berkamp / Lisa Jungbluth / Alexandros Katranidis / Siavash Mostafavi / Olivera Korculanin / Peng-Han Lu / Lotte Ickert / Maya M Dierig / Lokesh Sharma / Lipi Thukral / Pitter F Huesgen / Natalia L Kononenko / Jörg Fitter / Rafal E Dunin-Borkowski / Carsten Sachse / ![]() 要旨: The selective autophagy receptor p62/SQSTM1 is known to form higher-order filaments in vitro and to undergo liquid-liquid phase separation when mixed with poly-ubiquitin. Here, we determine the full- ...The selective autophagy receptor p62/SQSTM1 is known to form higher-order filaments in vitro and to undergo liquid-liquid phase separation when mixed with poly-ubiquitin. Here, we determine the full-length cryo-EM structure of p62 and elucidate a structured double helical filament scaffold composed of the PB1-domain associated with the flexible C-terminal part and the solvent-accessible major groove. At different pH values and upon binding to soluble LC3, LC3-conjugated membranes and poly-ubiquitin, we observe p62 filament re-arrangements in the form of structural unwinding, disassembly, lateral association and bundling, respectively. In the cellular environment, under conditions of ATG5 knockdown leading to stalled autophagy, we imaged high-contrast layers consisting of p62 oligomers enwrapping lipid droplets by cryogenic electron tomography in situ, which we identified as calcium as well as phosphorus by compositional spectroscopy analysis. Together, we visualize the cellular ultrastructure of p62 oligomers with high calcium content as a potential early stage of autophagy. | ||||||
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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 | 9hge.cif.gz | 678.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9hge.ent.gz | 576.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9hge.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/hg/9hge ftp://data.pdbj.org/pub/pdb/validation_reports/hg/9hge | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 52134MC 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 | 分子量: 11553.090 Da / 分子数: 40 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SQSTM1, ORCA, OSIL / 発現宿主: ![]() 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: p62/SQSTM1 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||||||||||||
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| 由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||||||||
| 由来(組換発現) | 生物種: ![]() | ||||||||||||||||||||||||||||||
| 緩衝液 | pH: 6 | ||||||||||||||||||||||||||||||
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| 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: Quantifoil R2/1 | ||||||||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 283 K |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TALOS ARCTICA |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 100000 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 / Cs: 2.7 mm / C2レンズ絞り径: 100 µm / アライメント法: BASIC |
| 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: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 4038 |
| 画像スキャン | 横: 5760 / 縦: 4092 |
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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: -26.141 ° / 軸方向距離/サブユニット: 10.985 Å / らせん対称軸の対称性: D1 | ||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 1000000 | ||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 600000 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 6tgy Accession code: 6tgy / Source name: PDB / タイプ: experimental model |
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万見について




Homo sapiens (ヒト)
引用


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FIELD EMISSION GUN
