+Open data
-Basic information
Entry | Database: PDB / ID: 6tgy | ||||||||||||
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Title | Cryo-EM structure of p62-PB1 filament (L-type) | ||||||||||||
Components | Sequestosome-1 | ||||||||||||
Keywords | APOPTOSIS / Autophagy | ||||||||||||
Function / homology | Function and homology information brown fat cell proliferation / protein localization to perinuclear region of cytoplasm / regulation of Ras protein signal transduction / protein targeting to vacuole involved in autophagy / Lewy body / response to mitochondrial depolarisation / aggrephagy / amphisome / negative regulation of toll-like receptor 4 signaling pathway / pexophagy ...brown fat cell proliferation / protein localization to perinuclear region of cytoplasm / regulation of Ras protein signal transduction / protein targeting to vacuole involved in autophagy / Lewy body / response to mitochondrial depolarisation / aggrephagy / amphisome / negative regulation of toll-like receptor 4 signaling pathway / pexophagy / regulation of protein complex stability / autophagy of mitochondrion / endosome organization / non-membrane-bounded organelle assembly / molecular sequestering activity / phagophore assembly site / regulation of mitochondrion organization / aggresome / regulation of canonical NF-kappaB signal transduction / ubiquitin-modified protein reader activity / Nuclear events mediated by NFE2L2 / autolysosome / K63-linked polyubiquitin modification-dependent protein binding / intracellular non-membrane-bounded organelle / endosomal transport / temperature homeostasis / immune system process / mitophagy / autophagosome / positive regulation of autophagy / energy homeostasis / signaling adaptor activity / inclusion body / sperm midpiece / negative regulation of protein ubiquitination / protein sequestering activity / p75NTR recruits signalling complexes / PINK1-PRKN Mediated Mitophagy / Pexophagy / NF-kB is activated and signals survival / NRIF signals cell death from the nucleus / sarcomere / SH2 domain binding / molecular condensate scaffold activity / ubiquitin binding / positive regulation of long-term synaptic potentiation / response to ischemia / macroautophagy / protein kinase C binding / positive regulation of protein localization to plasma membrane / ionotropic glutamate receptor binding / P-body / protein catabolic process / protein localization / 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 / late endosome / protein-macromolecule adaptor activity / Neddylation / signaling receptor activity / ubiquitin-dependent protein catabolic process / transcription by RNA polymerase II / cell differentiation / intracellular signal transduction / positive regulation of protein phosphorylation / positive regulation of apoptotic process / intracellular membrane-bounded organelle / apoptotic process / ubiquitin protein ligase binding / protein-containing complex binding / protein kinase binding / enzyme binding / negative regulation of transcription by RNA polymerase II / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / mitochondrion / zinc ion binding / extracellular exosome / nucleoplasm / identical protein binding / cytoplasm / cytosol Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.5 Å | ||||||||||||
Authors | Jakobi, A.J. / Huber, S.T. / Mortensen, S.A. / Sachse, C. | ||||||||||||
Funding support | Germany, 3items
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Citation | Journal: Nat Commun / Year: 2020 Title: Structural basis of p62/SQSTM1 helical filaments and their role in cellular cargo uptake. Authors: 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 ...Authors: 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 / Abstract: 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. | ||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6tgy.cif.gz | 33.5 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6tgy.ent.gz | 22 KB | Display | PDB format |
PDBx/mmJSON format | 6tgy.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6tgy_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 6tgy_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 6tgy_validation.xml.gz | 21 KB | Display | |
Data in CIF | 6tgy_validation.cif.gz | 28.3 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/tg/6tgy ftp://data.pdbj.org/pub/pdb/validation_reports/tg/6tgy | HTTPS FTP |
-Related structure data
Related structure data | 10501MC 6tgnC 6tgpC 6tgsC 6th3C C: citing same article (ref.) M: map data used to model this data |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 13704.609 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: SQSTM1, ORCA, OSIL / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: Q13501 |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: helical reconstruction |
-Sample preparation
Component | Name: p62-PB1 domain filament (L-type) / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Homo sapiens (human) |
Source (recombinant) | Organism: Escherichia coli BL21(DE3) (bacteria) |
Buffer solution | pH: 7.5 / Details: 50 mM TRIS (pH 7.5), 100 mM NaCl, 4 mM DTT |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R2/1 |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 283 K |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 40 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 2277 |
Image scans | Movie frames/image: 40 |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Helical symmerty | Angular rotation/subunit: 77.29 ° / Axial rise/subunit: 4.787 Å / Axial symmetry: C2 | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.5 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 51853 / Symmetry type: HELICAL | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL / Target criteria: Correlation coefficient | ||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 2KKC Accession code: 2KKC / Source name: PDB / Type: experimental model |