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- EMDB-0077: Narrow Pick Filament from Pick's disease brain -

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Basic information

Entry
Database: EMDB / ID: EMD-0077
TitleNarrow Pick Filament from Pick's disease brain
Map data
Sample
  • Tissue: Tau filaments extracted from the frontotemporal cortex of a patient with Pick's disease
    • Protein or peptide: Microtubule-associated protein tauTau protein
Function / homology
Function and homology information


plus-end-directed organelle transport along microtubule / axonal transport / histone-dependent DNA binding / neurofibrillary tangle assembly / positive regulation of diacylglycerol kinase activity / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / positive regulation of protein localization to synapse / microtubule lateral binding / tubulin complex ...plus-end-directed organelle transport along microtubule / axonal transport / histone-dependent DNA binding / neurofibrillary tangle assembly / positive regulation of diacylglycerol kinase activity / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / positive regulation of protein localization to synapse / microtubule lateral binding / tubulin complex / phosphatidylinositol bisphosphate binding / main axon / regulation of long-term synaptic depression / negative regulation of kinase activity / negative regulation of tubulin deacetylation / generation of neurons / regulation of chromosome organization / positive regulation of protein localization / rRNA metabolic process / internal protein amino acid acetylation / regulation of mitochondrial fission / lipoprotein particle binding / intracellular distribution of mitochondria / axonal transport of mitochondrion / axon development / central nervous system neuron development / regulation of microtubule polymerization / microtubule polymerization / minor groove of adenine-thymine-rich DNA binding / negative regulation of mitochondrial membrane potential / dynactin binding / glial cell projection / apolipoprotein binding / protein polymerization / negative regulation of mitochondrial fission / axolemma / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / positive regulation of axon extension / supramolecular fiber organization / Activation of AMPK downstream of NMDARs / regulation of microtubule cytoskeleton organization / stress granule assembly / cytoplasmic microtubule organization / regulation of cellular response to heat / regulation of calcium-mediated signaling / axon cytoplasm / positive regulation of microtubule polymerization / cellular response to brain-derived neurotrophic factor stimulus / somatodendritic compartment / synapse assembly / phosphatidylinositol binding / nuclear periphery / cellular response to nerve growth factor stimulus / positive regulation of superoxide anion generation / protein phosphatase 2A binding / regulation of autophagy / astrocyte activation / synapse organization / microglial cell activation / response to lead ion / Hsp90 protein binding / regulation of synaptic plasticity / PKR-mediated signaling / protein homooligomerization / cytoplasmic ribonucleoprotein granule / memory / microtubule cytoskeleton organization / SH3 domain binding / cellular response to reactive oxygen species / neuron projection development / activation of cysteine-type endopeptidase activity involved in apoptotic process / microtubule cytoskeleton / protein-macromolecule adaptor activity / single-stranded DNA binding / cell-cell signaling / cellular response to heat / cell body / actin binding / growth cone / protein-folding chaperone binding / double-stranded DNA binding / microtubule binding / microtubule / amyloid fibril formation / sequence-specific DNA binding / dendritic spine / learning or memory / neuron projection / nuclear speck / membrane raft / axon / negative regulation of gene expression / dendrite / neuronal cell body / DNA damage response / protein kinase binding / enzyme binding / mitochondrion / DNA binding
Similarity search - Function
: / Microtubule associated protein, tubulin-binding repeat / Microtubule-associated protein Tau / Tau and MAP protein, tubulin-binding repeat / Tau and MAP proteins tubulin-binding repeat signature. / Tau and MAP proteins tubulin-binding repeat profile.
Similarity search - Domain/homology
Microtubule-associated protein tau
Similarity search - Component
Biological speciesHomo sapiens (human) / Human (human)
Methodhelical reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsFalcon B / Zhang W / Murzin AG / Murshudov G / Garringer HJ / Vidal R / Crowther RA / Ghetti B / Scheres SHW / Goedert M
Funding support United Kingdom, United States, 6 items
OrganizationGrant numberCountry
Medical Research Council (United Kingdom)MC_U105184291 United Kingdom
Medical Research Council (United Kingdom)MC_UP_A025_1013 United Kingdom
Medical Research Council (United Kingdom)MC_UP_A025_1012 United Kingdom
National Institutes of Health/National Institute on Aging (NIH/NIA)P30-AG010133 United States
European UnionJoint Programme-Neurodegeneration Research United Kingdom
European UnionHorizon 2020 IMPRiND United Kingdom
CitationJournal: Nature / Year: 2018
Title: Structures of filaments from Pick's disease reveal a novel tau protein fold.
Authors: Benjamin Falcon / Wenjuan Zhang / Alexey G Murzin / Garib Murshudov / Holly J Garringer / Ruben Vidal / R Anthony Crowther / Bernardino Ghetti / Sjors H W Scheres / Michel Goedert /
Abstract: The ordered assembly of tau protein into abnormal filamentous inclusions underlies many human neurodegenerative diseases. Tau assemblies seem to spread through specific neural networks in each ...The ordered assembly of tau protein into abnormal filamentous inclusions underlies many human neurodegenerative diseases. Tau assemblies seem to spread through specific neural networks in each disease, with short filaments having the greatest seeding activity. The abundance of tau inclusions strongly correlates with disease symptoms. Six tau isoforms are expressed in the normal adult human brain-three isoforms with four microtubule-binding repeats each (4R tau) and three isoforms that lack the second repeat (3R tau). In various diseases, tau filaments can be composed of either 3R or 4R tau, or of both. Tau filaments have distinct cellular and neuroanatomical distributions, with morphological and biochemical differences suggesting that they may be able to adopt disease-specific molecular conformations. Such conformers may give rise to different neuropathological phenotypes, reminiscent of prion strains. However, the underlying structures are not known. Using electron cryo-microscopy, we recently reported the structures of tau filaments from patients with Alzheimer's disease, which contain both 3R and 4R tau. Here we determine the structures of tau filaments from patients with Pick's disease, a neurodegenerative disorder characterized by frontotemporal dementia. The filaments consist of residues Lys254-Phe378 of 3R tau, which are folded differently from the tau filaments in Alzheimer's disease, establishing the existence of conformers of assembled tau. The observed tau fold in the filaments of patients with Pick's disease explains the selective incorporation of 3R tau in Pick bodies, and the differences in phosphorylation relative to the tau filaments of Alzheimer's disease. Our findings show how tau can adopt distinct folds in the human brain in different diseases, an essential step for understanding the formation and propagation of molecular conformers.
History
DepositionJun 26, 2018-
Header (metadata) releaseAug 22, 2018-
Map releaseSep 12, 2018-
UpdateMar 30, 2022-
Current statusMar 30, 2022Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6gx5
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_0077.png

Downloads & links

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Map

FileDownload / File: emd_0077.map.gz / Format: CCP4 / Size: 75.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.15 Å
Density
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.04
Minimum - Maximum-0.066882834 - 0.17804243
Average (Standard dev.)3.1686854e-05 (±0.0016635783)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions270270270
Spacing270270270
CellA=B=C: 310.5 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.151.151.15
M x/y/z270270270
origin x/y/z0.0000.0000.000
length x/y/z310.500310.500310.500
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS270270270
D min/max/mean-0.0670.1780.000

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Supplemental data

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Mask #1

Fileemd_0077_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_0077_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_0077_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Sample components

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Entire : Tau filaments extracted from the frontotemporal cortex of a patie...

EntireName: Tau filaments extracted from the frontotemporal cortex of a patient with Pick's disease
Components
  • Tissue: Tau filaments extracted from the frontotemporal cortex of a patient with Pick's disease
    • Protein or peptide: Microtubule-associated protein tauTau protein

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Supramolecule #1: Tau filaments extracted from the frontotemporal cortex of a patie...

SupramoleculeName: Tau filaments extracted from the frontotemporal cortex of a patient with Pick's disease
type: tissue / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human) / Organ: Brain / Tissue: Frontotemporal cortex

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Macromolecule #1: Microtubule-associated protein tau

MacromoleculeName: Microtubule-associated protein tau / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human (human) / Organ: Brain / Tissue: Frontotemporal cortex
Molecular weightTheoretical: 10.135665 KDa
SequenceString:
KNVKSKIGST ENLKHQPGGG KVQIVYKPVD LSKVTSKCGS LGNIHHKPGG GQVEVKSEKL DFKDRVQSKI GSLDNITHVP GGGNKKIET HKLTF

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statetissue

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Sample preparation

Concentration0.5 mg/mL
BufferpH: 7.4
Component:
ConcentrationFormulaName
50.0 mMTris-HClTris
150.0 mMNaClSodium chloride
0.02 %A8-35Amphipol
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV
DetailsDispersed filaments

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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 / Cs: 2.7 mm / Nominal defocus max: 2.8000000000000003 µm / Nominal defocus min: 1.7 µm
Specialist opticsEnergy filter - Name: GIF Quantum LS
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: COUNTING / Average electron dose: 1.06 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf (ver. 1.06)
Final angle assignmentType: NOT APPLICABLE
Final reconstructionApplied symmetry - Helical parameters - Δz: 4.78 Å
Applied symmetry - Helical parameters - Δ&Phi: -0.75 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 2.1) / Number images used: 16097
FSC plot (resolution estimation)

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Atomic model buiding 1

DetailsFourier-space refinement of the complete atomic model against the narrow Pick filament map was performed in REFMAC. A stack of three consecutive monomers was refined to preserve nearest-neighbour interactions for the middle chain.
RefinementSpace: RECIPROCAL / Protocol: AB INITIO MODEL / Overall B value: 57 / Target criteria: Fourier shell correlation
Output model

PDB-6gx5:
Narrow Pick Filament from Pick's disease brain

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