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- EMDB-16603: Type2 alpha-synuclein filament assembled in vitro by wild-type an... -

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Basic information

Entry
Database: EMDB / ID: EMD-16603
TitleType2 alpha-synuclein filament assembled in vitro by wild-type and mutant (7 residues insertion) protein
Map data
Sample
  • Complex: Alpha-synuclein filament assembled in vitro by wild-type and mutant (7 residues insertion) protein
    • Protein or peptide: Alpha-synuclein
Keywordsalpha-synuclein / amyloid / fibril / insertion / mutation / in vitro / recombinant / synucleinopathy / PROTEIN 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 / 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 / negative regulation of chaperone-mediated autophagy / mitochondrial membrane organization / 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 / response to iron(II) ion / SNARE complex assembly / regulation of locomotion / positive regulation of neurotransmitter secretion / negative regulation of dopamine metabolic process / positive regulation of inositol phosphate biosynthetic process / regulation of macrophage activation / regulation of norepinephrine uptake / negative regulation of microtubule polymerization / synaptic vesicle transport / transporter regulator activity / 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 / negative regulation of thrombin-activated receptor signaling pathway / positive regulation of receptor recycling / cuprous ion binding / nuclear outer membrane / response to magnesium ion / positive regulation of endocytosis / positive regulation of exocytosis / synaptic vesicle exocytosis / kinesin binding / synaptic vesicle endocytosis / enzyme inhibitor activity / 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 / phospholipid metabolic process / cellular response to fibroblast growth factor stimulus / inclusion body / axon terminus / Hsp70 protein binding / cellular response to epinephrine stimulus / response to interleukin-1 / regulation of microtubule cytoskeleton organization / cellular response to copper ion / positive regulation of release of sequestered calcium ion into cytosol / adult locomotory behavior / SNARE binding / excitatory postsynaptic potential / protein tetramerization / phosphoprotein binding / microglial cell activation / ferrous iron binding / fatty acid metabolic process / regulation of long-term neuronal synaptic plasticity / 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 / growth cone / cellular response to oxidative stress / neuron apoptotic process / cell cortex / response to lipopolysaccharide / histone binding / microtubule binding / molecular adaptor activity / chemical synaptic transmission / amyloid fibril formation / negative regulation of neuron apoptotic process / mitochondrial outer membrane / oxidoreductase activity
Similarity search - Function
Synuclein / Alpha-synuclein / Synuclein
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodhelical reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsYang Y / Garringer JH / Shi Y / Lovestam S / Sew PC / Zhang XJ / Kotecha A / Bacioglu M / Koto A / Takao M ...Yang Y / Garringer JH / Shi Y / Lovestam S / Sew PC / Zhang XJ / Kotecha A / Bacioglu M / Koto A / Takao M / Spillantini GM / Ghetti B / Vidal R / Murzin GA / Scheres HWS / Goedert M
Funding support United Kingdom, 2 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_UP_A025-1013 United Kingdom
Medical Research Council (MRC, United Kingdom)MC_U105184291 United Kingdom
CitationJournal: Acta Neuropathol / Year: 2023
Title: New SNCA mutation and structures of α-synuclein filaments from juvenile-onset synucleinopathy.
Authors: Yang Yang / Holly J Garringer / Yang Shi / Sofia Lövestam / Sew Peak-Chew / Xianjun Zhang / Abhay Kotecha / Mehtap Bacioglu / Atsuo Koto / Masaki Takao / Maria Grazia Spillantini / ...Authors: Yang Yang / Holly J Garringer / Yang Shi / Sofia Lövestam / Sew Peak-Chew / Xianjun Zhang / Abhay Kotecha / Mehtap Bacioglu / Atsuo Koto / Masaki Takao / Maria Grazia Spillantini / Bernardino Ghetti / Ruben Vidal / Alexey G Murzin / Sjors H W Scheres / Michel Goedert /
Abstract: A 21-nucleotide duplication in one allele of SNCA was identified in a previously described disease with abundant α-synuclein inclusions that we now call juvenile-onset synucleinopathy (JOS). This ...A 21-nucleotide duplication in one allele of SNCA was identified in a previously described disease with abundant α-synuclein inclusions that we now call juvenile-onset synucleinopathy (JOS). This mutation translates into the insertion of MAAAEKT after residue 22 of α-synuclein, resulting in a protein of 147 amino acids. Both wild-type and mutant proteins were present in sarkosyl-insoluble material that was extracted from frontal cortex of the individual with JOS and examined by electron cryo-microscopy. The structures of JOS filaments, comprising either a single protofilament, or a pair of protofilaments, revealed a new α-synuclein fold that differs from the folds of Lewy body diseases and multiple system atrophy (MSA). The JOS fold consists of a compact core, the sequence of which (residues 36-100 of wild-type α-synuclein) is unaffected by the mutation, and two disconnected density islands (A and B) of mixed sequences. There is a non-proteinaceous cofactor bound between the core and island A. The JOS fold resembles the common substructure of MSA Type I and Type II dimeric filaments, with its core segment approximating the C-terminal body of MSA protofilaments B and its islands mimicking the N-terminal arm of MSA protofilaments A. The partial similarity of JOS and MSA folds extends to the locations of their cofactor-binding sites. In vitro assembly of recombinant wild-type α-synuclein, its insertion mutant and their mixture yielded structures that were distinct from those of JOS filaments. Our findings provide insight into a possible mechanism of JOS fibrillation in which mutant α-synuclein of 147 amino acids forms a nucleus with the JOS fold, around which wild-type and mutant proteins assemble during elongation.
History
DepositionFeb 1, 2023-
Header (metadata) releaseMar 8, 2023-
Map releaseMar 8, 2023-
UpdateJul 24, 2024-
Current statusJul 24, 2024Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_16603.png

Downloads & links

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Map

FileDownload / File: emd_16603.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

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AxesZ (Sec.)Y (Row.)X (Col.)
0.82 Å/pix.
x 256 pix.
= 210.944 Å		0.82 Å/pix.
x 256 pix.
= 210.944 Å		0.82 Å/pix.
x 256 pix.
= 210.944 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.824 Å
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Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0075
Minimum - Maximum-0.022353463 - 0.042248286
Average (Standard dev.)0.00016041195 (±0.0025132573)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 210.944 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_16603_msk_1.map
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Half map: #2

Fileemd_16603_half_map_1.map
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Half map: #1

Fileemd_16603_half_map_2.map
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Sample components

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Entire : Alpha-synuclein filament assembled in vitro by wild-type and muta...

EntireName: Alpha-synuclein filament assembled in vitro by wild-type and mutant (7 residues insertion) protein
Components
  • Complex: Alpha-synuclein filament assembled in vitro by wild-type and mutant (7 residues insertion) protein
    • Protein or peptide: Alpha-synuclein

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Supramolecule #1: Alpha-synuclein filament assembled in vitro by wild-type and muta...

SupramoleculeName: Alpha-synuclein filament assembled in vitro by wild-type and mutant (7 residues insertion) protein
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Alpha-synuclein

MacromoleculeName: Alpha-synuclein / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 14.476108 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MDVFMKGLSK AKEGVVAAAE KTKQGVAEAA GKTKEGVLYV GSKTKEGVVH GVATVAEKTK EQVTNVGGAV VTGVTAVAQK TVEGAGSIA AATGFVKKDQ LGKNEEGAPQ EGILEDMPVD PDNEAYEMPS EEGYQDYEPE A

UniProtKB: Alpha-synuclein

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statefilament

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 2.38 Å
Applied symmetry - Helical parameters - Δ&Phi: -179.56 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 53703
Startup modelType of model: OTHER
Final angle assignmentType: NOT APPLICABLE
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementProtocol: RIGID BODY FIT
Output model

PDB-8ceb:
Type2 alpha-synuclein filament assembled in vitro by wild-type and mutant (7 residues insertion) protein

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