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- PDB-8y2p: The cryo-EM structure of a-synuclein fibril in Tris buffer. -

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Basic information

Entry
Database: PDB / ID: 8y2p
TitleThe cryo-EM structure of a-synuclein fibril in Tris buffer.
ComponentsAlpha-synuclein
KeywordsPROTEIN FIBRIL / amyloid
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 / regulation of synaptic vesicle recycling ...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 / regulation of reactive oxygen species biosynthetic process / positive regulation of protein localization to cell periphery / mitochondrial membrane organization / negative regulation of exocytosis / regulation of glutamate secretion / dopamine biosynthetic process / positive regulation of neurotransmitter secretion / response to iron(II) ion / regulation of macrophage activation / negative regulation of dopamine metabolic process / negative regulation of platelet-derived growth factor receptor signaling pathway / SNARE complex assembly / negative regulation of thrombin-activated receptor signaling pathway / Lewy body / regulation of locomotion / negative regulation of microtubule polymerization / synaptic vesicle priming / regulation of norepinephrine uptake / transporter regulator activity / protein kinase inhibitor activity / positive regulation of inositol phosphate biosynthetic process / synaptic vesicle transport / dopamine uptake involved in synaptic transmission / regulation of dopamine secretion / positive regulation of receptor recycling / cuprous ion binding / positive regulation of exocytosis / nuclear outer membrane / mitochondrial ATP synthesis coupled electron transport / dynein complex binding / synaptic vesicle exocytosis / response to magnesium ion / positive regulation of endocytosis / negative regulation of serotonin uptake / response to type II interferon / cysteine-type endopeptidase inhibitor activity / kinesin binding / regulation of presynapse assembly / synaptic vesicle endocytosis / alpha-tubulin binding / beta-tubulin binding / phospholipase binding / phospholipid metabolic process / supramolecular fiber organization / behavioral response to cocaine / cellular response to fibroblast growth factor stimulus / cellular response to epinephrine stimulus / inclusion body / Hsp70 protein binding / enzyme inhibitor activity / response to interleukin-1 / axon terminus / cellular response to copper ion / regulation of microtubule cytoskeleton organization / positive regulation of release of sequestered calcium ion into cytosol / SNARE binding / adult locomotory behavior / glutathione metabolic process / protein tetramerization / protein sequestering activity / phosphoprotein binding / tubulin binding / excitatory postsynaptic potential / microglial cell activation / ferrous iron binding / fatty acid metabolic process / phospholipid binding / PKR-mediated signaling / synapse organization / receptor internalization / regulation of long-term neuronal synaptic plasticity / protein destabilization / tau protein binding / enzyme activator activity / positive regulation of inflammatory response / terminal bouton / long-term synaptic potentiation / actin cytoskeleton / synaptic vesicle membrane / growth cone / actin binding / cellular response to oxidative stress / neuron apoptotic process / cell cortex / histone binding / response to lipopolysaccharide / microtubule binding / amyloid fibril formation / chemical synaptic transmission
Similarity search - Function
Synuclein / Alpha-synuclein / Synuclein
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsYao, Y.X. / Zhao, Q.Y. / Liu, C. / Li, D.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: J Biol Chem / Year: 2024
Title: Different charged biopolymers induce α-synuclein to form fibrils with distinct structures.
Authors: Yuxuan Yao / Qinyue Zhao / Youqi Tao / Kaien Liu / Tianyi Cao / Zipeng Chen / Cong Liu / WeiDong Le / Jing Zhao / Dan Li / Wenyan Kang /
Abstract: The aggregation of α-synuclein (α-syn) into amyloid fibrils, a key process in the development of Parkinson's disease (PD) and other synucleinopathies, is influenced by a range of factors such as ...The aggregation of α-synuclein (α-syn) into amyloid fibrils, a key process in the development of Parkinson's disease (PD) and other synucleinopathies, is influenced by a range of factors such as charged biopolymers, chaperones, and metabolites. However, the specific impacts of different biopolymers on α-syn fibril structure are not well understood. In our work, we found that different polyanions and polycations, such as polyphosphate (polyP), polyuridine (polyU), and polyamines (including putrescine, spermidine, and spermine), markedly altered the fibrillation kinetics of α-syn in vitro. Furthermore, the seeding assay revealed distinct cross-seeding capacities across different biopolymer-induced α-syn fibrils, suggesting the formation of structurally distinct strains under different conditions. Utilizing cryo-electron microscopy (cryo-EM), we further examined the detailed structural configuration of α-syn fibrils formed in the presence of these biopolymers. Notably, we found that while polyamines do not change the atomic structure of α-syn fibrils, polyU and polyP induce the formation of distinct amyloid fibrils, exhibiting a range of structural polymorphs. Our work offers valuable insights into how various charged biopolymers affect the aggregation process and the resultant structures of α-syn fibrils, thereby enhancing our understanding of the structural variations in α-syn fibrils across different pathological conditions.
History
DepositionJan 27, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 29, 2025Provider: repository / Type: Initial release
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
F: Alpha-synuclein
A: Alpha-synuclein
D: Alpha-synuclein
B: Alpha-synuclein
E: Alpha-synuclein
C: Alpha-synuclein


Theoretical massNumber of molelcules
Total (without water)86,8576
Polymers86,8576
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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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.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SNCA, NACP, PARK1 / Production host: Escherichia coli K-12 (bacteria) / 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 fibrils in Tris / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
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 / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 55 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: NONE
Helical symmertyAngular rotation/subunit: 179.669 ° / Axial rise/subunit: 2.408 Å / Axial symmetry: C1
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 14187 / Symmetry type: HELICAL

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