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- EMDB-6208: Structure of 20S supercomplex determined by single particle cryoe... -
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Basic information
Entry | Database: EMDB / ID: EMD-6208 | |||||||||
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Title | Structure of 20S supercomplex determined by single particle cryoelectron microscopy, state IIIa | |||||||||
![]() | Map of 20S supercomplex, state IIIa. This map is unsharpened and unfiltered. The map was normalized using the program MAPMAN. | |||||||||
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![]() | vesicle trafficking | |||||||||
Function / homology | ![]() exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of delayed rectifier potassium channel activity / soluble NSF attachment protein activity / Intra-Golgi traffic / Retrograde transport at the Trans-Golgi-Network / COPI-dependent Golgi-to-ER retrograde traffic / COPI-mediated anterograde transport / BLOC-1 complex / Lysosome Vesicle Biogenesis ...exocytic insertion of neurotransmitter receptor to postsynaptic membrane / trans-Golgi Network Vesicle Budding / regulation of delayed rectifier potassium channel activity / soluble NSF attachment protein activity / Intra-Golgi traffic / Retrograde transport at the Trans-Golgi-Network / COPI-dependent Golgi-to-ER retrograde traffic / COPI-mediated anterograde transport / BLOC-1 complex / Lysosome Vesicle Biogenesis / myosin head/neck binding / SNARE complex disassembly / zymogen granule membrane / storage vacuole / synaptic vesicle fusion to presynaptic active zone membrane / Other interleukin signaling / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex / synaptobrevin 2-SNAP-25-syntaxin-1a complex / presynaptic dense core vesicle exocytosis / synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex / extrinsic component of presynaptic membrane / calcium ion-regulated exocytosis of neurotransmitter / Glutamate Neurotransmitter Release Cycle / Norepinephrine Neurotransmitter Release Cycle / Acetylcholine Neurotransmitter Release Cycle / Serotonin Neurotransmitter Release Cycle / COPII-mediated vesicle transport / GABA synthesis, release, reuptake and degradation / regulated exocytosis / positive regulation of norepinephrine secretion / positive regulation of catecholamine secretion / Dopamine Neurotransmitter Release Cycle / synaptic vesicle docking / eosinophil degranulation / Golgi Associated Vesicle Biogenesis / regulation of synaptic vesicle priming / regulation of establishment of protein localization / vesicle-mediated transport in synapse / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / protein-containing complex disassembly / positive regulation of intracellular protein transport / positive regulation of calcium ion-dependent exocytosis / vesicle docking / ribbon synapse / regulation of vesicle-mediated transport / Cargo recognition for clathrin-mediated endocytosis / secretion by cell / regulation of exocytosis / SNAP receptor activity / chloride channel inhibitor activity / SNARE complex / Clathrin-mediated endocytosis / vesicle fusion / calcium-ion regulated exocytosis / ATP-dependent protein disaggregase activity / actomyosin / LGI-ADAM interactions / hormone secretion / intra-Golgi vesicle-mediated transport / Golgi to plasma membrane protein transport / positive regulation of hormone secretion / positive regulation of ATP-dependent activity / Golgi stack / neuron projection terminus / ATP-dependent protein binding / neurotransmitter secretion / apical protein localization / protein localization to membrane / regulation of synaptic vesicle recycling / syntaxin binding / clathrin-coated vesicle / vesicle-fusing ATPase / syntaxin-1 binding / insulin secretion / endosomal transport / Neutrophil degranulation / SNARE complex assembly / positive regulation of neurotransmitter secretion / neurotransmitter transport / synaptic vesicle priming / regulation of synapse assembly / response to gravity / myosin binding / regulation of neuron projection development / positive regulation of receptor recycling / exocytosis / modulation of excitatory postsynaptic potential / positive regulation of exocytosis / synaptic vesicle exocytosis / associative learning / protein sumoylation / synaptic vesicle endocytosis / voltage-gated potassium channel activity / positive regulation of excitatory postsynaptic potential / postsynaptic cytosol / long-term memory / response to glucose / axonal growth cone / calcium channel inhibitor activity / vesicle-mediated transport Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 8.4 Å | |||||||||
![]() | Zhao M / Wu S / Zhou Q / Vivona S / Cipriano DJ / Cheng Y / Brunger AT | |||||||||
![]() | ![]() Title: Mechanistic insights into the recycling machine of the SNARE complex. Authors: Minglei Zhao / Shenping Wu / Qiangjun Zhou / Sandro Vivona / Daniel J Cipriano / Yifan Cheng / Axel T Brunger / ![]() Abstract: Evolutionarily conserved SNARE (soluble N-ethylmaleimide sensitive factor attachment protein receptors) proteins form a complex that drives membrane fusion in eukaryotes. The ATPase NSF (N- ...Evolutionarily conserved SNARE (soluble N-ethylmaleimide sensitive factor attachment protein receptors) proteins form a complex that drives membrane fusion in eukaryotes. The ATPase NSF (N-ethylmaleimide sensitive factor), together with SNAPs (soluble NSF attachment protein), disassembles the SNARE complex into its protein components, making individual SNAREs available for subsequent rounds of fusion. Here we report structures of ATP- and ADP-bound NSF, and the NSF/SNAP/SNARE (20S) supercomplex determined by single-particle electron cryomicroscopy at near-atomic to sub-nanometre resolution without imposing symmetry. Large, potentially force-generating, conformational differences exist between ATP- and ADP-bound NSF. The 20S supercomplex exhibits broken symmetry, transitioning from six-fold symmetry of the NSF ATPase domains to pseudo four-fold symmetry of the SNARE complex. SNAPs interact with the SNARE complex with an opposite structural twist, suggesting an unwinding mechanism. The interfaces between NSF, SNAPs, and SNAREs exhibit characteristic electrostatic patterns, suggesting how one NSF/SNAP species can act on many different SNARE complexes. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17.4 KB 17.4 KB | Display Display | ![]() |
Images | ![]() | 109.5 KB | ||
Others | ![]() | 7.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 366.7 KB | Display | ![]() |
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Full document | ![]() | 366.2 KB | Display | |
Data in XML | ![]() | 5.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 3j98MC ![]() 6204C ![]() 6205C ![]() 6206C ![]() 6207C ![]() 6209C ![]() 6210C ![]() 3j94C ![]() 3j95C ![]() 3j96C ![]() 3j97C ![]() 3j99C M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Map of 20S supercomplex, state IIIa. This map is unsharpened and unfiltered. The map was normalized using the program MAPMAN. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 2.4312 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Supplemental map: emd 6208 additional 1.map
File | emd_6208_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : 20S supercomplex consisting of truncated neuronal SNARE complex, ...
Entire | Name: 20S supercomplex consisting of truncated neuronal SNARE complex, alpha-SNAP, and N-ethylmaleimide sensitive factor (NSF) |
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Components |
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-Supramolecule #1000: 20S supercomplex consisting of truncated neuronal SNARE complex, ...
Supramolecule | Name: 20S supercomplex consisting of truncated neuronal SNARE complex, alpha-SNAP, and N-ethylmaleimide sensitive factor (NSF) type: sample / ID: 1000 Oligomeric state: One hexamer of NSF + four alpha-SNAP molecules + one SNARE complex Number unique components: 5 |
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Molecular weight | Theoretical: 660 KDa |
-Macromolecule #1: N-ethylmaleimide sensitive factor
Macromolecule | Name: N-ethylmaleimide sensitive factor / type: protein_or_peptide / ID: 1 / Name.synonym: NSF / Number of copies: 6 / Oligomeric state: hexamer / Recombinant expression: Yes |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 83 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | UniProtKB: Vesicle-fusing ATPase |
-Macromolecule #2: alpha Soluble NSF Attachment Protein
Macromolecule | Name: alpha Soluble NSF Attachment Protein / type: protein_or_peptide / ID: 2 / Name.synonym: alpha-SNAP / Number of copies: 4 / Recombinant expression: Yes |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 33 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | UniProtKB: Alpha-soluble NSF attachment protein |
-Macromolecule #3: Syntaxin-1A
Macromolecule | Name: Syntaxin-1A / type: protein_or_peptide / ID: 3 / Name.synonym: Stx-1A / Number of copies: 1 / Recombinant expression: Yes |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 8 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | UniProtKB: Syntaxin-1A |
-Macromolecule #4: Synaptobrevin-2
Macromolecule | Name: Synaptobrevin-2 / type: protein_or_peptide / ID: 4 / Name.synonym: Syb-2, VAMP-2 / Number of copies: 1 / Recombinant expression: Yes |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 8 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | UniProtKB: Vesicle-associated membrane protein 2 |
-Macromolecule #5: Synaptosomal-associated protein 25
Macromolecule | Name: Synaptosomal-associated protein 25 / type: protein_or_peptide / ID: 5 / Name.synonym: SNAP-25 / Number of copies: 1 / Recombinant expression: Yes |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 16 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | UniProtKB: Synaptosomal-associated protein 25 |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 15 mg/mL |
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Buffer | pH: 8 Details: 50 mM Tris-Cl, 150 mM NaCl, 1 mM AMPPNP, 1 mM EDTA, 1 mM DTT, 0.05% v/v Nonident P-40 |
Grid | Details: Holey carbon on top of 400 mesh copper grid |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 90 K / Instrument: FEI VITROBOT MARK I / Method: Blot for 3.5 seconds before plunging. |
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Electron microscopy
Microscope | FEI POLARA 300 |
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Date | Jan 28, 2014 |
Image recording | Category: CCD / Film or detector model: GATAN K2 (4k x 4k) / Average electron dose: 44 e/Å2 Details: Gatan K2 Summit in super-resolution counting mode. Motion correction as described in Li et al. (2013) Nature Methods. |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.3 mm / Nominal defocus max: -2.8 µm / Nominal defocus min: -1.8 µm / Nominal magnification: 31000 |
Sample stage | Specimen holder model: OTHER |
Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |
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Image processing
Details | 3D classification, refinement, and reconstruction were performed using RELION. |
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CTF correction | Details: Each particle |
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 8.4 Å / Resolution method: OTHER / Software - Name: RELION / Number images used: 15249 |
-Atomic model buiding 1
Initial model | PDB ID: Chain - Chain ID: A |
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Software | Name: Chimera, PHENIX |
Details | D2 domain of NSF was from crystal structure 1NSF. D1 domain of NSF was from related entry EMD-6204. N domain of NSF was from crystal structure 1QCS. aSNAP was a homology model. SNARE complex was from crystal structure 1N7S. |
Refinement | Space: RECIPROCAL / Protocol: FLEXIBLE FIT / Target criteria: R-factor |
Output model | ![]() PDB-3j98: |
-Atomic model buiding 2
Initial model | PDB ID: Chain - Chain ID: A |
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Software | Name: Chimera, PHENIX |
Details | D2 domain of NSF was from crystal structure 1NSF. D1 domain of NSF was from related entry EMD-6204. N domain of NSF was from crystal structure 1QCS. aSNAP was a homology model. SNARE complex was from crystal structure 1N7S. |
Refinement | Space: RECIPROCAL / Protocol: FLEXIBLE FIT / Target criteria: R-factor |
Output model | ![]() PDB-3j98: |
-Atomic model buiding 3
Initial model | PDB ID: Chain - #0 - Chain ID: A / Chain - #1 - Chain ID: B / Chain - #2 - Chain ID: C / Chain - #3 - Chain ID: D |
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Software | Name: Chimera, PHENIX |
Details | D2 domain of NSF was from crystal structure 1NSF. D1 domain of NSF was from related entry EMD-6204. N domain of NSF was from crystal structure 1QCS. aSNAP was a homology model. SNARE complex was from crystal structure 1N7S. |
Refinement | Space: RECIPROCAL / Protocol: FLEXIBLE FIT / Target criteria: R-factor |
Output model | ![]() PDB-3j98: |