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基本情報
登録情報 | データベース: PDB / ID: 4uf9 | ||||||
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タイトル | Electron cryo-microscopy structure of PB1-p62 type T filaments | ||||||
![]() | SEQUESTOSOME-1 | ||||||
![]() | SIGNALING PROTEIN / SELECTIVE AUTOPHAGY / AUTOPHAGY RECEPTOR / AUTOPHAGY SCAFFOLD / P62/SQSTM1 / SINGLE-PARTICLE HELICAL RECONSTRUCTION | ||||||
機能・相同性 | ![]() brown fat cell proliferation / protein localization to perinuclear region of cytoplasm / regulation of Ras protein signal transduction / protein targeting to vacuole involved in autophagy / response to mitochondrial depolarisation / aggrephagy / Lewy body / negative regulation of toll-like receptor 4 signaling pathway / amphisome / regulation of protein complex stability ...brown fat cell proliferation / protein localization to perinuclear region of cytoplasm / regulation of Ras protein signal transduction / protein targeting to vacuole involved in autophagy / response to mitochondrial depolarisation / aggrephagy / Lewy body / 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 / ubiquitin-modified protein reader activity / regulation of mitochondrion organization / regulation of canonical NF-kappaB signal transduction / Nuclear events mediated by NFE2L2 / aggresome / endosomal transport / intracellular membraneless organelle / K63-linked polyubiquitin modification-dependent protein binding / negative regulation of ferroptosis / temperature homeostasis / cellular response to stress / autolysosome / energy homeostasis / molecular sequestering activity / p75NTR recruits signalling complexes / NF-kB is activated and signals survival / NRIF signals cell death from the nucleus / Pexophagy / mitophagy / sperm midpiece / immune system process / inclusion body / signaling adaptor activity / ionotropic glutamate receptor binding / negative regulation of protein ubiquitination / positive regulation of autophagy / PINK1-PRKN Mediated Mitophagy / SH2 domain binding / autophagosome / protein kinase C binding / protein sequestering activity / sarcomere / response to ischemia / ubiquitin binding / positive regulation of long-term synaptic potentiation / positive regulation of protein localization to plasma membrane / macroautophagy / P-body / protein catabolic process / molecular condensate scaffold activity / PML body / receptor tyrosine kinase binding / Interleukin-1 signaling / autophagy / KEAP1-NFE2L2 pathway / Signaling by ALK fusions and activated point mutants / protein import into nucleus / late endosome / intracellular protein localization / Neddylation / signaling receptor activity / ubiquitin-dependent protein catabolic process / protein-macromolecule adaptor activity / transcription by RNA polymerase II / cell differentiation / intracellular signal transduction / positive regulation of apoptotic process / intracellular membrane-bounded organelle / ubiquitin protein ligase binding / apoptotic process / protein kinase binding / protein-containing complex binding / glutamatergic synapse / enzyme binding / endoplasmic reticulum / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / mitochondrion / extracellular exosome / zinc ion binding / nucleoplasm / identical protein binding / cytosol / cytoplasm 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: 10.3 Å | ||||||
![]() | Ciuffa, R. / Lamark, T. / Tarafder, A. / Guesdon, A. / Rybina, S. / Hagen, W.J.H. / Johansen, T. / Sachse, C. | ||||||
![]() | ![]() タイトル: The selective autophagy receptor p62 forms a flexible filamentous helical scaffold. 著者: Rodolfo Ciuffa / Trond Lamark / Abul K Tarafder / Audrey Guesdon / Sofia Rybina / Wim J H Hagen / Terje Johansen / Carsten Sachse / ![]() ![]() 要旨: The scaffold protein p62/SQSTM1 is involved in protein turnover and signaling and is commonly found in dense protein bodies in eukaryotic cells. In autophagy, p62 acts as a selective autophagy ...The scaffold protein p62/SQSTM1 is involved in protein turnover and signaling and is commonly found in dense protein bodies in eukaryotic cells. In autophagy, p62 acts as a selective autophagy receptor that recognizes and shuttles ubiquitinated proteins to the autophagosome for degradation. The structural organization of p62 in cellular bodies and the interplay of these assemblies with ubiquitin and the autophagic marker LC3 remain to be elucidated. Here, we present a cryo-EM structural analysis of p62. Together with structures of assemblies from the PB1 domain, we show that p62 is organized in flexible polymers with the PB1 domain constituting a helical scaffold. Filamentous p62 is capable of binding LC3 and addition of long ubiquitin chains induces disassembly and shortening of filaments. These studies explain how p62 assemblies provide a large molecular scaffold for the nascent autophagosome and reveal how they can bind ubiquitinated cargo. | ||||||
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構造の表示
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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 | ![]() | 62.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 46.3 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 | ![]() | 718.7 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 723.2 KB | 表示 | |
XML形式データ | ![]() | 13.7 KB | 表示 | |
CIF形式データ | ![]() | 19.4 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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対称性 | らせん対称: (回転対称性: 1 / Dyad axis: no / N subunits divisor: 1 / Num. of operations: 20 / Rise per n subunits: 10.09 Å / Rotation per n subunits: -26.71 °) |
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要素
#1: タンパク質 | 分子量: 13704.609 Da / 分子数: 3 / 断片: PB1 DOMAIN, RESIDUES 1-122 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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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: PB1(1-122) DOMAIN OF P62- SQSTM-1 / タイプ: COMPLEX |
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緩衝液 | 名称: 50 MM TRIS PH 7.5, 100 MM NACL, DTT 4 MM / pH: 7.5 / 詳細: 50 MM TRIS PH 7.5, 100 MM NACL, DTT 4 MM |
試料 | 濃度: 0.25 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: HOLEY CARBON |
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE 詳細: VITRIFICATION 1 -- CRYOGEN- ETHANE, TEMPERATURE- 77, INSTRUMENT- HOMEMADE PLUNGER, METHOD- BACKSIDE BLOTTING, |
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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 / 日付: 2012年10月9日 |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 59000 X / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 1500 nm / Cs: 2.7 mm |
撮影 | 電子線照射量: 10 e/Å2 フィルム・検出器のモデル: GATAN ULTRASCAN 4000 (4k x 4k) |
画像スキャン | デジタル画像の数: 443 |
放射波長 | 相対比: 1 |
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解析
EMソフトウェア |
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CTF補正 | 詳細: CTFFIND, CONVOLUTION IMAGES, WIENER FILTER RECONSTRUCTION | ||||||||||||
3次元再構成 | 手法: PROJECTION MATCHING / 解像度: 10.3 Å / 粒子像の数: 182238 / ピクセルサイズ(公称値): 1.372 Å / ピクセルサイズ(実測値): 1.372 Å 詳細: SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2937. (DEPOSITION ID: 13204). 対称性のタイプ: HELICAL | ||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / 詳細: METHOD--RIGID BODY REFINEMENT PROTOCOL--NMR | ||||||||||||
原子モデル構築 | PDB-ID: 2KKC Accession code: 2KKC / Source name: PDB / タイプ: experimental model | ||||||||||||
精密化 | 最高解像度: 10.3 Å | ||||||||||||
精密化ステップ | サイクル: LAST / 最高解像度: 10.3 Å
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