+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-20328 | ||||||||||||
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Title | Cryo-EM structure of alpha-synuclein H50Q Narrow Fibril | ||||||||||||
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Sample |
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Keywords | Alpha-synuclein / amyloid / H50Q / hereditary mutation / fibril / PROTEIN FIBRIL | ||||||||||||
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 | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | helical reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||
Authors | Boyer DR / Li B | ||||||||||||
Funding support | United States, 3 items
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Citation | Journal: Nat Struct Mol Biol / Year: 2019 Title: Structures of fibrils formed by α-synuclein hereditary disease mutant H50Q reveal new polymorphs. Authors: David R Boyer / Binsen Li / Chuanqi Sun / Weijia Fan / Michael R Sawaya / Lin Jiang / David S Eisenberg / Abstract: Deposits of amyloid fibrils of α-synuclein are the histological hallmarks of Parkinson's disease, dementia with Lewy bodies and multiple system atrophy, with hereditary mutations in α-synuclein ...Deposits of amyloid fibrils of α-synuclein are the histological hallmarks of Parkinson's disease, dementia with Lewy bodies and multiple system atrophy, with hereditary mutations in α-synuclein linked to the first two of these conditions. Seeing the changes to the structures of amyloid fibrils bearing these mutations may help to understand these diseases. To this end, we determined the cryo-EM structures of α-synuclein fibrils containing the H50Q hereditary mutation. We find that the H50Q mutation results in two previously unobserved polymorphs of α-synuclein: narrow and wide fibrils, formed from either one or two protofilaments, respectively. These structures recapitulate conserved features of the wild-type fold but reveal new structural elements, including a previously unobserved hydrogen-bond network and surprising new protofilament arrangements. The structures of the H50Q polymorphs help to rationalize the faster aggregation kinetics, higher seeding capacity in biosensor cells and greater cytotoxicity that we observe for H50Q compared to wild-type α-synuclein. | ||||||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_20328.map.gz | 7.4 MB | EMDB map data format | |
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Header (meta data) | emd-20328-v30.xml emd-20328.xml | 10.1 KB 10.1 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_20328_fsc.xml | 10.3 KB | Display | FSC data file |
Images | emd_20328.png | 181.1 KB | ||
Filedesc metadata | emd-20328.cif.gz | 5 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-20328 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-20328 | HTTPS FTP |
-Related structure data
Related structure data | 6peoMC 6pesC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data | |
EM raw data | EMPIAR-10632 (Title: Cryo electron microscopy of alpha-synuclein H50Q fibrils Data size: 595.3 Data #1: Unaligned K2 movies of alpha-synuclein H50Q fibrils [micrographs - multiframe]) |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_20328.map.gz / Format: CCP4 / Size: 8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 1.065 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : Alpha-synuclein amyloid fibril with H50Q hereditary mutation - Na...
Entire | Name: Alpha-synuclein amyloid fibril with H50Q hereditary mutation - Narrow Fibril polymorph |
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Components |
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-Supramolecule #1: Alpha-synuclein amyloid fibril with H50Q hereditary mutation - Na...
Supramolecule | Name: Alpha-synuclein amyloid fibril with H50Q hereditary mutation - Narrow Fibril polymorph type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: Alpha-synuclein
Macromolecule | Name: Alpha-synuclein / type: protein_or_peptide / ID: 1 / Number of copies: 5 / Enantiomer: LEVO |
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Source (natural) | Organism: Homo sapiens (human) |
Molecular weight | Theoretical: 14.466091 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MDVFMKGLSK AKEGVVAAAE KTKQGVAEAA GKTKEGVLYV GSKTKEGVVQ GVATVAEKTK EQVTNVGGAV VTGVTAVAQK TVEGAGSIA AATGFVKKDQ LGKNEEGAPQ EGILEDMPVD PDNEAYEMPS EEGYQDYEPE A UniProtKB: Alpha-synuclein |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | helical reconstruction |
Aggregation state | filament |
-Sample preparation
Buffer | pH: 7 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 26.0 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |