- EMDB-10502: Cryo-EM structure of p62-PB1 filament (L-type) -
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基本情報
登録情報
データベース: EMDB / ID: EMD-10502
タイトル
Cryo-EM structure of p62-PB1 filament (L-type)
マップデータ
Globally sharpened map
試料
複合体: p62-PB1 domain filament (L-type)
タンパク質・ペプチド: Sequestosome-1
キーワード
Autophagy / CYTOSOLIC PROTEIN
機能・相同性
機能・相同性情報
brown fat cell proliferation / protein localization to perinuclear region of cytoplasm / protein targeting to vacuole involved in autophagy / regulation of Ras protein signal transduction / 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 / protein targeting to vacuole involved in autophagy / regulation of Ras protein signal transduction / response to mitochondrial depolarisation / aggrephagy / Lewy body / negative regulation of toll-like receptor 4 signaling pathway / amphisome / regulation of protein complex stability / endosome organization / pexophagy / autophagy of mitochondrion / 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 / K63-linked polyubiquitin modification-dependent protein binding / intracellular membraneless organelle / negative regulation of ferroptosis / temperature homeostasis / cellular response to stress / autolysosome / molecular sequestering activity / immune system process / mitophagy / energy homeostasis / sperm midpiece / signaling adaptor activity / inclusion body / ionotropic glutamate receptor binding / negative regulation of protein ubiquitination / positive regulation of autophagy / SH2 domain binding / p75NTR recruits signalling complexes / protein sequestering activity / autophagosome / NF-kB is activated and signals survival / Pexophagy / NRIF signals cell death from the nucleus / protein kinase C binding / sarcomere / ubiquitin binding / response to ischemia / positive regulation of long-term synaptic potentiation / PINK1-PRKN Mediated Mitophagy / positive regulation of protein localization to plasma membrane / macroautophagy / P-body / protein catabolic process / molecular condensate scaffold activity / receptor tyrosine kinase binding / PML body / autophagy / Interleukin-1 signaling / protein import into nucleus / KEAP1-NFE2L2 pathway / Signaling by ALK fusions and activated point mutants / intracellular protein localization / late endosome / signaling receptor activity / Neddylation / 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 / apoptotic process / ubiquitin protein ligase binding / 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
ジャーナル: Nat Commun / 年: 2020 タイトル: Structural basis of p62/SQSTM1 helical filaments and their role in cellular cargo uptake. 著者: Arjen J Jakobi / Stefan T Huber / Simon A Mortensen / Sebastian W Schultz / Anthimi Palara / Tanja Kuhm / Birendra Kumar Shrestha / Trond Lamark / Wim J H Hagen / Matthias Wilmanns / Terje ...著者: Arjen J Jakobi / Stefan T Huber / Simon A Mortensen / Sebastian W Schultz / Anthimi Palara / Tanja Kuhm / Birendra Kumar Shrestha / Trond Lamark / Wim J H Hagen / Matthias Wilmanns / Terje Johansen / Andreas Brech / Carsten Sachse / 要旨: p62/SQSTM1 is an autophagy receptor and signaling adaptor with an N-terminal PB1 domain that forms the scaffold of phase-separated p62 bodies in the cell. The molecular determinants that govern PB1 ...p62/SQSTM1 is an autophagy receptor and signaling adaptor with an N-terminal PB1 domain that forms the scaffold of phase-separated p62 bodies in the cell. The molecular determinants that govern PB1 domain filament formation in vitro remain to be determined and the role of p62 filaments inside the cell is currently unclear. We here determine four high-resolution cryo-EM structures of different human and Arabidopsis PB1 domain assemblies and observed a filamentous ultrastructure of p62/SQSTM1 bodies using correlative cellular EM. We show that oligomerization or polymerization, driven by a double arginine finger in the PB1 domain, is a general requirement for lysosomal targeting of p62. Furthermore, the filamentous assembly state of p62 is required for autophagosomal processing of the p62-specific cargo KEAP1. Our results show that using such mechanisms, p62 filaments can be critical for cargo uptake in autophagy and are an integral part of phase-separated p62 bodies.