|Entry||Database: PDB / ID: 6h6b|
|Title||Structure of alpha-synuclein fibrils|
|Keywords||PROTEIN FIBRIL / Parkinson's disease / apha-synuclein / fibril / filament|
|Function / homology||Amyloid fiber formation / Synuclein / Alpha-synuclein / Synuclein / negative regulation of monooxygenase activity / positive regulation of glutathione peroxidase activity / regulation of phospholipase activity / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission ...Amyloid fiber formation / Synuclein / Alpha-synuclein / Synuclein / negative regulation of monooxygenase activity / positive regulation of glutathione peroxidase activity / regulation of phospholipase activity / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / response to desipramine / negative regulation of norepinephrine uptake / negative regulation of mitochondrial electron transport, NADH to ubiquinone / positive regulation of hydrogen peroxide catabolic process / mitochondrial membrane organization / supramolecular fiber / regulation of glutamate secretion / regulation of reactive oxygen species biosynthetic process / negative regulation of transporter activity / negative regulation of chaperone-mediated autophagy / regulation of presynapse assembly / regulation of norepinephrine uptake / regulation of synaptic vesicle recycling / regulation of locomotion / positive regulation of neurotransmitter secretion / negative regulation of platelet-derived growth factor receptor signaling pathway / positive regulation of inositol phosphate biosynthetic process / negative regulation of exocytosis / response to iron(II) ion / negative regulation of serotonin uptake / dopamine biosynthetic process / mitochondrial ATP synthesis coupled electron transport / negative regulation of histone acetylation / synaptic vesicle transport / positive regulation of receptor recycling / negative regulation of microtubule polymerization / dopamine uptake involved in synaptic transmission / regulation of dopamine secretion / nuclear outer membrane / synaptic vesicle endocytosis / regulation of macrophage activation / negative regulation of dopamine metabolic process / dynein complex binding / beta-tubulin binding / supramolecular fiber organization / alpha-tubulin binding / phospholipase binding / kinesin binding / positive regulation of endocytosis / response to magnesium ion / cuprous ion binding / cellular response to fibroblast growth factor stimulus / cellular response to copper ion / response to interferon-gamma / negative regulation of thrombin-activated receptor signaling pathway / excitatory postsynaptic potential / cysteine-type endopeptidase inhibitor activity involved in apoptotic process / response to interleukin-1 / behavioral response to cocaine / microglial cell activation / inclusion body / long-term synaptic potentiation / fatty acid metabolic process / regulation of transmembrane transporter activity / Hsp70 protein binding / synapse organization / adult locomotory behavior / phospholipid metabolic process / cellular response to epinephrine stimulus / tau protein binding / postsynapse / synaptic vesicle / ferrous iron binding / positive regulation of protein serine/threonine kinase activity / rough endoplasmic reticulum / negative regulation of protein phosphorylation / regulation of long-term neuronal synaptic plasticity / receptor internalization / positive regulation of release of sequestered calcium ion into cytosol / protein destabilization / terminal bouton / negative regulation of neuron death / phospholipid binding / cytoplasmic vesicle membrane / positive regulation of inflammatory response / phosphoprotein binding / mitochondrial intermembrane space / actin cytoskeleton / activation of cysteine-type endopeptidase activity involved in apoptotic process / negative regulation of cysteine-type endopeptidase activity involved in apoptotic process / cell cortex / positive regulation of neuron death / growth cone / cellular response to oxidative stress / mitochondrial inner membrane / actin binding / histone binding / transcription regulatory region DNA binding / ribosome / lysosome|
Function and homology information
|Specimen source||Homo sapiens (human)|
|Method||ELECTRON MICROSCOPY / helical reconstruction / cryo EM / 3.4 Å resolution|
|Authors||Guerrero-Ferreira, R. / Taylor, N.M.I. / Mona, D. / Ringler, P. / Lauer, M.E. / Riek, R. / Britschgi, M. / Stahlberg, H.|
|Citation||Journal: Elife / Year: 2018|
Title: Cryo-EM structure of alpha-synuclein fibrils.
Authors: Ricardo Guerrero-Ferreira / Nicholas M I Taylor / Daniel Mona / Philippe Ringler / Matthias E Lauer / Roland Riek / Markus Britschgi / Henning Stahlberg
Abstract: Parkinson's disease is a progressive neuropathological disorder that belongs to the class of synucleopathies, in which the protein alpha-synuclein is found at abnormally high concentrations in ...Parkinson's disease is a progressive neuropathological disorder that belongs to the class of synucleopathies, in which the protein alpha-synuclein is found at abnormally high concentrations in affected neurons. Its hallmark are intracellular inclusions called Lewy bodies and Lewy neurites. We here report the structure of cytotoxic alpha-synuclein fibrils (residues 1-121), determined by cryo-electron microscopy structure at a resolution of 3.4Å. Two protofilaments form a polar fibril composed of staggered β-strands. The backbone of residues 38 to 95, including the fibril core and the non-amyloid component region, are well resolved in the EM map. Residues 50-57, containing three of the mutation sites associated with familial synucleinopathies, form the interface between the two protofilaments and contribute to fibril stability. A hydrophobic cleft at one end of the fibril may have implications for fibril elongation, and invites for the design of molecules for diagnosis and treatment of synucleinopathies.
SummaryFull reportAbout validation report
|Date||Deposition: Jul 26, 2018 / Release: Aug 8, 2018|
|Structure viewer||Molecule: |
Downloads & links
Mass: 12242.873 Da / Num. of mol.: 10 / Source: (gene. exp.) Homo sapiens (human) / Gene: SNCA, NACP, PARK1 / Plasmid name: pET21
Production host: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
References: UniProt: P37840
|Experiment||Method: ELECTRON MICROSCOPY|
|EM experiment||Aggregation state: FILAMENT / Reconstruction method: helical reconstruction|
|Component||Name: Alpha-synuclein fibrils / Type: COMPLEX / Details: Residues 1-121 / Entity ID: 1 / Source: RECOMBINANT|
|Molecular weight||Experimental value: NO|
|Source (natural)||Organism: Homo sapiens (human)|
|Source (recombinant)||Organism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)|
|Buffer solution||pH: 7.3|
|Specimen||Conc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES|
|Specimen support||Grid material: COPPER / Grid mesh size: 300 / Grid type: Quantifoil R2/2|
|Vitrification||Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 kelvins|
-Electron microscopy imaging
Model: Titan Krios / Image courtesy: FEI Company
|Microscopy||Microscope model: FEI TITAN KRIOS|
|Electron gun||Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM|
|Electron lens||Mode: BRIGHT FIELDBright-field microscopy|
|Image recording||Electron dose: 100 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k)|
|EM imaging optics||Energyfilter name: GIF Quantum LS|
|Image scans||Movie frames/image: 50 / Used frames/image: 2-50|
|Software||Name: PHENIX / Version: 1.13_2998: / Classification: refinement|
|CTF correction||Type: PHASE FLIPPING AND AMPLITUDE CORRECTION|
|Helical symmerty||Angular rotation/subunit: 179.5 deg. / Axial rise/subunit: 2.45 Å / Axial symmetry: C1|
|Particle selection||Details: Segments extracted from 792 manually picked fibrils|
Number of particles selected: 18860
|3D reconstruction||Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Number of particles: 13390 / Symmetry type: HELICAL|
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