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- EMDB-10307: cryo-em structure of alpha-synuclein fibril polymorph 2A -

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Basic information

Entry
Database: EMDB / ID: EMD-10307
Titlecryo-em structure of alpha-synuclein fibril polymorph 2A
Map dataCryo-em of WT alpha-synuclein fibril polymorph 2A
Sample
  • Complex: alpha synuclein fibril, polymorph 2A
    • Protein or peptide: Alpha-synuclein
Keywordsamyloid / parkinson / PROTEIN FIBRIL
Function / homology
Function and homology information


regulation of phospholipase activity / : / 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 ...regulation of phospholipase activity / : / 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 / negative regulation of transporter activity / 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 / 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 / dynein complex binding / positive regulation of receptor recycling / dopamine uptake involved in synaptic transmission / protein kinase inhibitor activity / regulation of dopamine secretion / negative regulation of thrombin-activated receptor signaling pathway / cuprous ion binding / positive regulation of endocytosis / synaptic vesicle exocytosis / positive regulation of exocytosis / response to magnesium ion / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / kinesin binding / synaptic vesicle endocytosis / regulation of presynapse assembly / response to type II interferon / negative regulation of serotonin uptake / alpha-tubulin binding / inclusion body / supramolecular fiber organization / phospholipid metabolic process / cellular response to copper ion / cellular response to epinephrine stimulus / axon terminus / Hsp70 protein binding / response to interleukin-1 / SNARE binding / positive regulation of release of sequestered calcium ion into cytosol / adult locomotory behavior / excitatory postsynaptic potential / fatty acid metabolic process / positive regulation of protein serine/threonine kinase activity / phosphoprotein binding / negative regulation of protein kinase activity / protein tetramerization / long-term synaptic potentiation / regulation of transmembrane transporter activity / microglial cell activation / regulation of long-term neuronal synaptic plasticity / synapse organization / ferrous iron binding / positive regulation of peptidyl-serine phosphorylation / protein destabilization / PKR-mediated signaling / tau protein binding / receptor internalization / phospholipid binding / synaptic vesicle membrane / positive regulation of inflammatory response / actin cytoskeleton / actin binding / growth cone / cell cortex / cellular response to oxidative stress / chemical synaptic transmission / neuron apoptotic process / molecular adaptor activity / response to lipopolysaccharide / negative regulation of neuron apoptotic process / histone binding / amyloid fibril formation / lysosome / oxidoreductase activity / transcription cis-regulatory region binding / postsynapse / positive regulation of apoptotic process / copper ion binding / response to xenobiotic stimulus
Similarity search - Function
Synuclein / Alpha-synuclein / Synuclein
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodhelical reconstruction / cryo EM / Resolution: 2.98 Å
AuthorsGuerrero-Ferreira R / Taylor NMI
Funding support Switzerland, France, Denmark, French Guiana, 13 items
OrganizationGrant numberCountry
Swiss National Science FoundationCRSII3_154461 Switzerland
European Union116060 France
Novo Nordisk FoundationNNF14CC0001 Denmark
Swiss National Science FoundationCRSII3_154461 Switzerland
Swiss National Science FoundationCRSII5_177195 Switzerland
Swiss National Science Foundation20020_178792 Switzerland
French National Research AgencyANR-12- BS08-0013-01 France
French National Research AgencyANR-11-LABX-0048 France
French National Research AgencyANR-11-IDEX-0007 France
Swiss National Science Foundation17.00038 Switzerland
French National Research AgencyANR-17-JPCD-0002-02French Guiana
French National Research AgencyANR-17-JPCD-0005-01French Guiana
French National Research AgencyANR-10-INSB-05-01 France
CitationJournal: Elife / Year: 2019
Title: Two new polymorphic structures of human full-length alpha-synuclein fibrils solved by cryo-electron microscopy.
Authors: Ricardo Guerrero-Ferreira / Nicholas Mi Taylor / Ana-Andreea Arteni / Pratibha Kumari / Daniel Mona / Philippe Ringler / Markus Britschgi / Matthias E Lauer / Ali Makky / Joeri Verasdonck / ...Authors: Ricardo Guerrero-Ferreira / Nicholas Mi Taylor / Ana-Andreea Arteni / Pratibha Kumari / Daniel Mona / Philippe Ringler / Markus Britschgi / Matthias E Lauer / Ali Makky / Joeri Verasdonck / Roland Riek / Ronald Melki / Beat H Meier / Anja Böckmann / Luc Bousset / Henning Stahlberg /
Abstract: Intracellular inclusions rich in alpha-synuclein are a hallmark of several neuropathological diseases including Parkinson's disease (PD). Previously, we reported the structure of alpha-synuclein ...Intracellular inclusions rich in alpha-synuclein are a hallmark of several neuropathological diseases including Parkinson's disease (PD). Previously, we reported the structure of alpha-synuclein fibrils (residues 1-121), composed of two protofibrils that are connected via a densely-packed interface formed by residues 50-57 (Guerrero-Ferreira, eLife 218;7:e36402). We here report two new polymorphic atomic structures of alpha-synuclein fibrils termed polymorphs 2a and 2b, at 3.0 Å and 3.4 Å resolution, respectively. These polymorphs show a radically different structure compared to previously reported polymorphs. The new structures have a 10 nm fibril diameter and are composed of two protofilaments which interact via intermolecular salt-bridges between amino acids K45, E57 (polymorph 2a) or E46 (polymorph 2b). The non-amyloid component (NAC) region of alpha-synuclein is fully buried by previously non-described interactions with the N-terminus. A hydrophobic cleft, the location of familial PD mutation sites, and the nature of the protofilament interface now invite to formulate hypotheses about fibril formation, growth and stability.
History
DepositionSep 9, 2019-
Header (metadata) releaseSep 18, 2019-
Map releaseDec 18, 2019-
UpdateMay 22, 2024-
Current statusMay 22, 2024Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.009
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.009
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6ssx
  • Surface level: 0.009
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_10307.png

Downloads & links

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Map

FileDownload / File: emd_10307.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-em of WT alpha-synuclein fibril polymorph 2A
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.63 Å/pix.
x 280 pix.
= 176.12 Å		0.63 Å/pix.
x 280 pix.
= 176.12 Å		0.63 Å/pix.
x 280 pix.
= 176.12 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.629 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.009 / Movie #1: 0.009
Minimum - Maximum-0.03006573 - 0.05293594
Average (Standard dev.)0.00013985706 (±0.0016248013)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 176.12 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.6290.6290.629
M x/y/z280280280
origin x/y/z0.0000.0000.000
length x/y/z176.120176.120176.120
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS280280280
D min/max/mean-0.0300.0530.000

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Supplemental data

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Sample components

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Entire : alpha synuclein fibril, polymorph 2A

EntireName: alpha synuclein fibril, polymorph 2A
Components
  • Complex: alpha synuclein fibril, polymorph 2A
    • Protein or peptide: Alpha-synuclein

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Supramolecule #1: alpha synuclein fibril, polymorph 2A

SupramoleculeName: alpha synuclein fibril, polymorph 2A / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51 kDa/nm

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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: Homo sapiens (human)
Molecular weightTheoretical: 14.476108 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
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

Concentration10 mg/mL
BufferpH: 7.5
Component:
ConcentrationNameFormula
50.0 mMTrisHCl
150.0 mMKCl
VitrificationCryogen name: ETHANE / Chamber humidity: 80 % / Chamber temperature: 293 K / Instrument: FEI VITROBOT MARK II
Details: 3 uL aliquots were applied onto second glow-discharged 300 mesh copper Quantifoil grids R2 1.
DetailsWT alpha synuclein

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 69.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 4.8 Å
Applied symmetry - Helical parameters - Δ&Phi: 0.8 °
Applied symmetry - Helical parameters - Axial symmetry: C2 (2 fold cyclic)
Resolution.type: BY AUTHOR / Resolution: 2.98 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: Coot / Number images used: 100323
Startup modelType of model: OTHER / Details: tube volume
Final angle assignmentType: NOT APPLICABLE / Software - Name: RELION (ver. 2.1)

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Atomic model buiding 1

RefinementProtocol: AB INITIO MODEL
Output model

PDB-6ssx:
cryo-em structure of alpha-synuclein fibril polymorph 2A

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