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- PDB-6cu7: Alpha Synuclein fibril formed by full length protein - Rod Polymorph -

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Basic information

Entry
Database: PDB / ID: 6cu7
TitleAlpha Synuclein fibril formed by full length protein - Rod Polymorph
ComponentsAlpha-synuclein
KeywordsPROTEIN FIBRIL / Parkinson's disease / Synucleinopathy / Amyloid aggregation / Fibril polymorphism
Function / homology
Function and homology information


negative regulation of mitochondrial electron transport, NADH to ubiquinone / : / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / response to desipramine / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber ...negative regulation of mitochondrial electron transport, NADH to ubiquinone / : / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / response to desipramine / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / regulation of synaptic vesicle recycling / mitochondrial membrane organization / negative regulation of chaperone-mediated autophagy / regulation of reactive oxygen species biosynthetic process / negative regulation of platelet-derived growth factor receptor signaling pathway / positive regulation of protein localization to cell periphery / negative regulation of exocytosis / regulation of glutamate secretion / dopamine biosynthetic process / SNARE complex assembly / regulation of norepinephrine uptake / response to iron(II) ion / positive regulation of neurotransmitter secretion / positive regulation of inositol phosphate biosynthetic process / regulation of locomotion / negative regulation of dopamine metabolic process / regulation of macrophage activation / transporter regulator activity / negative regulation of microtubule polymerization / synaptic vesicle transport / synaptic vesicle priming / dopamine uptake involved in synaptic transmission / protein kinase inhibitor activity / mitochondrial ATP synthesis coupled electron transport / regulation of dopamine secretion / dynein complex binding / positive regulation of receptor recycling / negative regulation of thrombin-activated receptor signaling pathway / cuprous ion binding / nuclear outer membrane / response to magnesium ion / positive regulation of endocytosis / positive regulation of exocytosis / synaptic vesicle exocytosis / kinesin binding / enzyme inhibitor activity / synaptic vesicle endocytosis / cysteine-type endopeptidase inhibitor activity / negative regulation of serotonin uptake / response to type II interferon / regulation of presynapse assembly / alpha-tubulin binding / beta-tubulin binding / phospholipase binding / behavioral response to cocaine / supramolecular fiber organization / cellular response to copper ion / phospholipid metabolic process / cellular response to fibroblast growth factor stimulus / inclusion body / axon terminus / cellular response to epinephrine stimulus / Hsp70 protein binding / response to interleukin-1 / regulation of microtubule cytoskeleton organization / positive regulation of release of sequestered calcium ion into cytosol / SNARE binding / adult locomotory behavior / excitatory postsynaptic potential / phosphoprotein binding / protein tetramerization / microglial cell activation / fatty acid metabolic process / regulation of long-term neuronal synaptic plasticity / ferrous iron binding / synapse organization / protein destabilization / PKR-mediated signaling / phospholipid binding / receptor internalization / tau protein binding / long-term synaptic potentiation / terminal bouton / positive regulation of inflammatory response / synaptic vesicle membrane / actin cytoskeleton / actin binding / cellular response to oxidative stress / growth cone / cell cortex / histone binding / neuron apoptotic process / response to lipopolysaccharide / microtubule binding / molecular adaptor activity / chemical synaptic transmission / amyloid fibril formation / mitochondrial outer membrane / negative regulation of neuron apoptotic process / lysosome
Similarity search - Function
Synuclein / Alpha-synuclein / Synuclein
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.5 Å
AuthorsLi, B. / Hatami, A. / Ge, P. / Murray, K.A. / Sheth, P. / Zhang, M. / Nair, G. / Sawaya, M.R. / Zhu, C. / Broad, M. ...Li, B. / Hatami, A. / Ge, P. / Murray, K.A. / Sheth, P. / Zhang, M. / Nair, G. / Sawaya, M.R. / Zhu, C. / Broad, M. / Shin, W.S. / Ye, S. / John, V. / Eisenberg, D.S. / Zhou, Z.H. / Jiang, L.
Funding support United States, 3items
OrganizationGrant numberCountry
XSEDEMCB140140 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)1R01GM071940 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)1R01AI094386 United States
CitationJournal: Nat Commun / Year: 2018
Title: Cryo-EM of full-length α-synuclein reveals fibril polymorphs with a common structural kernel.
Authors: Binsen Li / Peng Ge / Kevin A Murray / Phorum Sheth / Meng Zhang / Gayatri Nair / Michael R Sawaya / Woo Shik Shin / David R Boyer / Shulin Ye / David S Eisenberg / Z Hong Zhou / Lin Jiang /
Abstract: α-Synuclein (aSyn) fibrillar polymorphs have distinct in vitro and in vivo seeding activities, contributing differently to synucleinopathies. Despite numerous prior attempts, how polymorphic aSyn ...α-Synuclein (aSyn) fibrillar polymorphs have distinct in vitro and in vivo seeding activities, contributing differently to synucleinopathies. Despite numerous prior attempts, how polymorphic aSyn fibrils differ in atomic structure remains elusive. Here, we present fibril polymorphs from the full-length recombinant human aSyn and their seeding capacity and cytotoxicity in vitro. By cryo-electron microscopy helical reconstruction, we determine the structures of the two predominant species, a rod and a twister, both at 3.7 Å resolution. Our atomic models reveal that both polymorphs share a kernel structure of a bent β-arch, but differ in their inter-protofilament interfaces. Thus, different packing of the same kernel structure gives rise to distinct fibril polymorphs. Analyses of disease-related familial mutations suggest their potential contribution to the pathogenesis of synucleinopathies by altering population distribution of the fibril polymorphs. Drug design targeting amyloid fibrils in neurodegenerative diseases should consider the formation and distribution of concurrent fibril polymorphs.
History
DepositionMar 23, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 12, 2018Provider: repository / Type: Initial release
Revision 1.1Sep 19, 2018Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.page_first / _citation.page_last ..._citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Feb 27, 2019Group: Data collection / Database references / Category: citation_author / Item: _citation_author.identifier_ORCID
Revision 1.3Nov 6, 2019Group: Author supporting evidence / Data collection / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.4Dec 18, 2019Group: Author supporting evidence / Other / Category: atom_sites / cell / pdbx_audit_support
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB / _pdbx_audit_support.funding_organization
Revision 1.5Mar 13, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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Assembly

Deposited unit
E: Alpha-synuclein
A: Alpha-synuclein
B: Alpha-synuclein
C: Alpha-synuclein
D: Alpha-synuclein
F: Alpha-synuclein
G: Alpha-synuclein
H: Alpha-synuclein
I: Alpha-synuclein
J: Alpha-synuclein


Theoretical massNumber of molelcules
Total (without water)144,76110
Polymers144,76110
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Alpha-synuclein / Non-A beta component of AD amyloid / Non-A4 component of amyloid precursor / NACP


Mass: 14476.108 Da / Num. of mol.: 10
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNCA, NACP, PARK1 / Production host: Escherichia coli (E. coli) / Strain (production host): BL21-DE3 Gold / References: UniProt: P37840

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: FILAMENT / 3D reconstruction method: helical reconstruction

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Sample preparation

ComponentName: Alpha-synuclein fibril - rod polymorph / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightUnits: MEGADALTONS / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli) / Strain: BL21-DE3 Gold
Buffer solutionpH: 3
Buffer componentConc.: 15 mM / Name: tetrabutylphosphonium bromide / Formula: C16H36BrP
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: Quantifoil grid was treated with 1,2-Dichloroethane for one week, coated with additional carbon, and baken under 120kV in Camera chamber for 3 days
Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K / Details: blot force: 1 blot time: 4s

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2700 nm / Nominal defocus min: 2700 nm / Calibrated defocus min: 1500 nm / Calibrated defocus max: 4000 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 77 K / Temperature (min): 77 K
Image recordingAverage exposure time: 10 sec. / Electron dose: 30 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 1821 / Details: Frame rate 5 Hz
EM imaging opticsEnergyfilter name: GIF Quantum LS / Energyfilter upper: 10 eV / Energyfilter lower: -10 eV
Image scansSampling size: 5 µm / Width: 3838 / Height: 3710 / Movie frames/image: 50 / Used frames/image: 3-20

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Processing

SoftwareName: PHENIX / Version: 1.13_2998: / Classification: refinement
EM software
IDNameVersionCategory
2Leginon3.2image acquisition
4RELION2CTF correction
5CTFFIND4CTF correction
10CNS1.21model refinement
11PHENIX1.10.1-2155model refinement
12RELION2initial Euler assignment
13RELION2final Euler assignment
15RELION23D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 179.53 ° / Axial rise/subunit: 2.4 Å / Axial symmetry: C1
Particle selectionNum. of particles selected: 182253
3D reconstructionResolution: 3.5 Å / Resolution method: FSC 0.5 CUT-OFF / Num. of particles: 23830 / Algorithm: BACK PROJECTION / Symmetry type: HELICAL
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.014170
ELECTRON MICROSCOPYf_angle_d0.895640
ELECTRON MICROSCOPYf_dihedral_angle_d6.4653250
ELECTRON MICROSCOPYf_chiral_restr0.063740
ELECTRON MICROSCOPYf_plane_restr0.004700

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