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- EMDB-10652: Multiple system atrophy Type II-2 alpha-synuclein filament -

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Basic information

Entry
Database: EMDB / ID: EMD-10652
TitleMultiple system atrophy Type II-2 alpha-synuclein filamentBinary system
Map dataHelical symmetry imposed relion post-processed map.
Sample
  • Tissue: Sarkosyl-insoluble fractions from the putamen of multiple system atrophy brain
    • Protein or peptide: Alpha-synuclein
Function / homology
Function and homology information


negative regulation of mitochondrial electron transport, NADH to ubiquinone / neutral lipid metabolic process / regulation of phospholipase activity / negative regulation of monooxygenase activity / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / positive regulation of glutathione peroxidase activity / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process ...negative regulation of mitochondrial electron transport, NADH to ubiquinone / neutral lipid metabolic process / regulation of phospholipase activity / negative regulation of monooxygenase activity / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / positive regulation of glutathione peroxidase activity / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / negative regulation of transporter activity / negative regulation of chaperone-mediated autophagy / mitochondrial membrane organization / regulation of reactive oxygen species biosynthetic process / positive regulation of protein localization to cell periphery / regulation of synaptic vesicle recycling / negative regulation of platelet-derived growth factor receptor signaling pathway / negative regulation of exocytosis / regulation of glutamate secretion / response to iron(II) ion / regulation of norepinephrine uptake / dopamine biosynthetic process / SNARE complex assembly / positive regulation of neurotransmitter secretion / synaptic vesicle priming / dopamine uptake involved in synaptic transmission / regulation of macrophage activation / regulation of locomotion / positive regulation of inositol phosphate biosynthetic process / mitochondrial ATP synthesis coupled electron transport / negative regulation of microtubule polymerization / synaptic vesicle transport / dynein complex binding / positive regulation of receptor recycling / regulation of dopamine secretion / positive regulation of endocytosis / protein kinase inhibitor activity / negative regulation of thrombin-activated receptor signaling pathway / response to type II interferon / cuprous ion binding / positive regulation of exocytosis / synaptic vesicle exocytosis / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / response to magnesium ion / kinesin binding / alpha-tubulin binding / regulation of presynapse assembly / synaptic vesicle endocytosis / negative regulation of serotonin uptake / localization / phospholipid metabolic process / supramolecular fiber organization / axon terminus / inclusion body / cellular response to copper ion / Hsp70 protein binding / cellular response to epinephrine stimulus / excitatory postsynaptic potential / response to interleukin-1 / adult locomotory behavior / SNARE binding / positive regulation of release of sequestered calcium ion into cytosol / fatty acid metabolic process / long-term synaptic potentiation / regulation of transmembrane transporter activity / ferrous iron binding / synapse organization / phospholipid binding / protein tetramerization / phosphoprotein binding / microglial cell activation / regulation of long-term neuronal synaptic plasticity / negative regulation of protein kinase activity / tau protein binding / protein destabilization / PKR-mediated signaling / negative regulation of cysteine-type endopeptidase activity involved in apoptotic process / positive regulation of protein serine/threonine kinase activity / receptor internalization / synaptic vesicle membrane / positive regulation of inflammatory response / activation of cysteine-type endopeptidase activity involved in apoptotic process / actin cytoskeleton / positive regulation of peptidyl-serine phosphorylation / cellular response to oxidative stress / actin binding / cell cortex / histone binding / growth cone / chemical synaptic transmission / postsynapse / neuron apoptotic process / negative regulation of neuron apoptotic process / amyloid fibril formation / response to lipopolysaccharide / lysosome / molecular adaptor activity / oxidoreductase activity / transcription cis-regulatory region binding
Similarity search - Function
Synuclein / Alpha-synuclein / Synuclein
Similarity search - Domain/homology
Biological speciesHomo sapiens (human) / Human (human)
Methodhelical reconstruction / cryo EM / Resolution: 3.09 Å
AuthorsSchweighauser M / Shi Y / Tarutani A / Kametani F / Murzin AG / Ghetti B / Matsubara T / Tomita T / Ando T / Hasegawa K ...Schweighauser M / Shi Y / Tarutani A / Kametani F / Murzin AG / Ghetti B / Matsubara T / Tomita T / Ando T / Hasegawa K / Murayama S / Yoshida M / Hasegawa M / Scheres SHW / Goedert M
Funding support United Kingdom, Japan, United States, 7 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_UP_A025_1013 United Kingdom
Innovative Medicines Initiative116060 United Kingdom
Medical Research Council (MRC, United Kingdom)MC_U105184291 United Kingdom
Japan Agency for Medical Research and Development (AMED)JP18dm020719 Japan
Japan Agency for Medical Research and Development (AMED)JP18ek0109391 Japan
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)U01NS110437 United States
National Institutes of Health/National Institute on Aging (NIH/NIA)P30AG010133 United States
CitationJournal: Nature / Year: 2020
Title: Structures of α-synuclein filaments from multiple system atrophy.
Authors: Manuel Schweighauser / Yang Shi / Airi Tarutani / Fuyuki Kametani / Alexey G Murzin / Bernardino Ghetti / Tomoyasu Matsubara / Taisuke Tomita / Takashi Ando / Kazuko Hasegawa / Shigeo ...Authors: Manuel Schweighauser / Yang Shi / Airi Tarutani / Fuyuki Kametani / Alexey G Murzin / Bernardino Ghetti / Tomoyasu Matsubara / Taisuke Tomita / Takashi Ando / Kazuko Hasegawa / Shigeo Murayama / Mari Yoshida / Masato Hasegawa / Sjors H W Scheres / Michel Goedert /
Abstract: Synucleinopathies, which include multiple system atrophy (MSA), Parkinson's disease, Parkinson's disease with dementia and dementia with Lewy bodies (DLB), are human neurodegenerative diseases. ...Synucleinopathies, which include multiple system atrophy (MSA), Parkinson's disease, Parkinson's disease with dementia and dementia with Lewy bodies (DLB), are human neurodegenerative diseases. Existing treatments are at best symptomatic. These diseases are characterized by the presence of, and believed to be caused by the formation of, filamentous inclusions of α-synuclein in brain cells. However, the structures of α-synuclein filaments from the human brain are unknown. Here, using cryo-electron microscopy, we show that α-synuclein inclusions from the brains of individuals with MSA are made of two types of filament, each of which consists of two different protofilaments. In each type of filament, non-proteinaceous molecules are present at the interface of the two protofilaments. Using two-dimensional class averaging, we show that α-synuclein filaments from the brains of individuals with MSA differ from those of individuals with DLB, which suggests that distinct conformers or strains characterize specific synucleinopathies. As is the case with tau assemblies, the structures of α-synuclein filaments extracted from the brains of individuals with MSA differ from those formed in vitro using recombinant proteins, which has implications for understanding the mechanisms of aggregate propagation and neurodegeneration in the human brain. These findings have diagnostic and potential therapeutic relevance, especially because of the unmet clinical need to be able to image filamentous α-synuclein inclusions in the human brain.
History
DepositionJan 30, 2020-
Header (metadata) releaseFeb 12, 2020-
Map releaseFeb 12, 2020-
UpdateDec 2, 2020-
Current statusDec 2, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6xyq
  • Surface level: 0.025
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-6xyq
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10652.png

Downloads & links

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Map

FileDownload / File: emd_10652.map.gz / Format: CCP4 / Size: 40.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationHelical symmetry imposed relion post-processed map.
Voxel sizeX=Y=Z: 1.15 Å
Density
Contour LevelBy AUTHOR: 0.025 / Movie #1: 0.025
Minimum - Maximum-0.065219104 - 0.13315769
Average (Standard dev.)0.00087757973 (±0.007240183)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions220220220
Spacing220220220
CellA=B=C: 253.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.151.151.15
M x/y/z220220220
origin x/y/z0.0000.0000.000
length x/y/z253.000253.000253.000
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ360360360
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS220220220
D min/max/mean-0.0650.1330.001

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Supplemental data

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Mask #1

Fileemd_10652_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: Relion post-processed map.

Fileemd_10652_additional.map
AnnotationRelion post-processed map.
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_10652_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_10652_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Sarkosyl-insoluble fractions from the putamen of multiple system ...

EntireName: Sarkosyl-insoluble fractions from the putamen of multiple system atrophy brain
Components
  • Tissue: Sarkosyl-insoluble fractions from the putamen of multiple system atrophy brain
    • Protein or peptide: Alpha-synuclein

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Supramolecule #1: Sarkosyl-insoluble fractions from the putamen of multiple system ...

SupramoleculeName: Sarkosyl-insoluble fractions from the putamen of multiple system atrophy brain
type: tissue / 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: 10 / Enantiomer: LEVO
Source (natural)Organism: Human (human)
Molecular weightTheoretical: 14.476108 KDa
SequenceString:
MDVFMKGLSK AKEGVVAAAE KTKQGVAEAA GKTKEGVLYV GSKTKEGVVH GVATVAEKTK EQVTNVGGAV VTGVTAVAQK TVEGAGSIA AATGFVKKDQ LGKNEEGAPQ EGILEDMPVD PDNEAYEMPS EEGYQDYEPE A

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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: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 47.5 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final angle assignmentType: NOT APPLICABLE
Final reconstructionApplied symmetry - Helical parameters - Δz: 4.72 Å
Applied symmetry - Helical parameters - Δ&Phi: -1.34 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.09 Å / Resolution method: FSC 0.143 CUT-OFF
Details: Helical reconstruction in RELION3. The initial model was reconstructed from reference-free 2-D class averages and the resolution of the cryo-EM map was good enough to do de-novo modelling.
Number images used: 93137
FSC plot (resolution estimation)

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