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- PDB-6pes: Cryo-EM structure of alpha-synuclein H50Q Wide Fibril -

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Basic information

Entry
Database: PDB / ID: 6pes
TitleCryo-EM structure of alpha-synuclein H50Q Wide Fibril
ComponentsAlpha-synuclein
KeywordsPROTEIN FIBRIL / Alpha-synuclein / amyloid / H50Q / hereditary mutation / fibril
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 / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / mitochondrial membrane organization ...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 / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / mitochondrial membrane organization / negative regulation of chaperone-mediated autophagy / regulation of synaptic vesicle recycling / 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 / response to iron(II) ion / SNARE complex assembly / positive regulation of neurotransmitter secretion / dopamine biosynthetic process / regulation of norepinephrine uptake / transporter regulator activity / regulation of locomotion / synaptic vesicle priming / mitochondrial ATP synthesis coupled electron transport / regulation of macrophage activation / positive regulation of inositol phosphate biosynthetic process / negative regulation of microtubule polymerization / synaptic vesicle transport / positive regulation of receptor recycling / dopamine uptake involved in synaptic transmission / protein kinase inhibitor activity / dynein complex binding / regulation of dopamine secretion / negative regulation of thrombin-activated receptor signaling pathway / cuprous ion binding / positive regulation of endocytosis / positive regulation of exocytosis / response to magnesium ion / synaptic vesicle exocytosis / enzyme inhibitor activity / kinesin binding / synaptic vesicle endocytosis / regulation of presynapse assembly / response to type II interferon / cysteine-type endopeptidase inhibitor activity / negative regulation of serotonin uptake / alpha-tubulin binding / supramolecular fiber organization / inclusion body / phospholipid metabolic process / cellular response to copper ion / axon terminus / cellular response to epinephrine stimulus / Hsp70 protein binding / response to interleukin-1 / regulation of microtubule cytoskeleton organization / SNARE binding / positive regulation of release of sequestered calcium ion into cytosol / adult locomotory behavior / negative regulation of protein kinase activity / excitatory postsynaptic potential / fatty acid metabolic process / phosphoprotein binding / protein tetramerization / microglial cell activation / regulation of long-term neuronal synaptic plasticity / synapse organization / ferrous iron binding / protein destabilization / PKR-mediated signaling / phospholipid binding / receptor internalization / tau protein binding / long-term synaptic potentiation / synaptic vesicle membrane / positive regulation of inflammatory response / actin cytoskeleton / actin binding / growth cone / cell cortex / cellular response to oxidative stress / neuron apoptotic process / chemical synaptic transmission / molecular adaptor activity / negative regulation of neuron apoptotic process / response to lipopolysaccharide / histone binding / amyloid fibril formation / lysosome / oxidoreductase activity / postsynapse / transcription cis-regulatory region binding / positive regulation of apoptotic process / Amyloid fiber formation / copper ion binding / response to xenobiotic stimulus / axon / neuronal cell body
Similarity search - Function
Synuclein / Alpha-synuclein / Synuclein
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsBoyer, D.R. / Li, B. / Sawaya, M.R. / Jiang, L. / Eisenberg, D.S.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Aging (NIH/NIA)AG054022 United States
National Institutes of Health/National Institute on Aging (NIH/NIA)AG061847 United States
Department of Energy (DOE, United States)DE-FC02-02ER63421 United States
CitationJournal: Nat Struct Mol Biol / Year: 2019
Title: Structures of fibrils formed by α-synuclein hereditary disease mutant H50Q reveal new polymorphs.
Authors: David R Boyer / Binsen Li / Chuanqi Sun / Weijia Fan / Michael R Sawaya / Lin Jiang / David S Eisenberg /
Abstract: Deposits of amyloid fibrils of α-synuclein are the histological hallmarks of Parkinson's disease, dementia with Lewy bodies and multiple system atrophy, with hereditary mutations in α-synuclein ...Deposits of amyloid fibrils of α-synuclein are the histological hallmarks of Parkinson's disease, dementia with Lewy bodies and multiple system atrophy, with hereditary mutations in α-synuclein linked to the first two of these conditions. Seeing the changes to the structures of amyloid fibrils bearing these mutations may help to understand these diseases. To this end, we determined the cryo-EM structures of α-synuclein fibrils containing the H50Q hereditary mutation. We find that the H50Q mutation results in two previously unobserved polymorphs of α-synuclein: narrow and wide fibrils, formed from either one or two protofilaments, respectively. These structures recapitulate conserved features of the wild-type fold but reveal new structural elements, including a previously unobserved hydrogen-bond network and surprising new protofilament arrangements. The structures of the H50Q polymorphs help to rationalize the faster aggregation kinetics, higher seeding capacity in biosensor cells and greater cytotoxicity that we observe for H50Q compared to wild-type α-synuclein.
History
DepositionJun 20, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 27, 2019Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 27, 2019Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Mar 20, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.2May 21, 2025Group: Data collection / Structure summary / Category: em_admin / em_software / pdbx_entry_details / Item: _em_admin.last_update / _em_software.name
Revision 1.1May 21, 2025Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / Category: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name

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Structure visualization

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  • Deposited structure unit
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Assembly

Deposited unit
A: Alpha-synuclein
B: Alpha-synuclein
C: Alpha-synuclein
D: Alpha-synuclein
E: Alpha-synuclein
W: Alpha-synuclein
V: Alpha-synuclein
X: Alpha-synuclein
Y: Alpha-synuclein
Z: Alpha-synuclein


Theoretical massNumber of molelcules
Total (without water)144,66110
Polymers144,66110
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
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: 14466.091 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) / References: UniProt: P37840
Has protein modificationN

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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 amyloid fibril with H50Q hereditary mutation - Wide Fibril polymorph
Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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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
Image recordingElectron dose: 26 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: dev_3360: / Classification: refinement
EM software
IDNameVersionCategory
1RELION2particle selection
2Leginon3image acquisition
4CTFFIND4.1.8CTF correction
8PHENIXmodel refinement
10RELION2initial Euler assignment
11RELION2final Euler assignment
13RELION23D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: -0.83 ° / Axial rise/subunit: 4.82 Å / Axial symmetry: C1
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 28016 / Symmetry type: HELICAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0094045
ELECTRON MICROSCOPYf_angle_d0.6765465
ELECTRON MICROSCOPYf_dihedral_angle_d8.3162385
ELECTRON MICROSCOPYf_chiral_restr0.06725
ELECTRON MICROSCOPYf_plane_restr0.0061097

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