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- EMDB-45589: Alzheimer's Disease Seeded Mixed 0N4R and 0N3R Tau Fibrils -

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Basic information

Entry
Database: EMDB / ID: EMD-45589
TitleAlzheimer's Disease Seeded Mixed 0N4R and 0N3R Tau Fibrils
Map data
Sample
  • Complex: Amyloid Fibril of Mixed 0N4R and 0N3R Tau Seeded with Alzheimer's Disease Tau from Human Brain
    • Protein or peptide: Isoform Fetal-tau of Microtubule-associated protein tau
KeywordsTau / Amyloid / Cross-beta / Seeded-Fibril / PROTEIN FIBRIL
Function / homology
Function and homology information


plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / generation of neurons ...plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / generation of neurons / rRNA metabolic process / axonal transport of mitochondrion / regulation of mitochondrial fission / axon development / regulation of chromosome organization / regulation of microtubule-based movement / central nervous system neuron development / intracellular distribution of mitochondria / minor groove of adenine-thymine-rich DNA binding / lipoprotein particle binding / microtubule polymerization / negative regulation of mitochondrial membrane potential / regulation of microtubule polymerization / dynactin binding / apolipoprotein binding / main axon / protein polymerization / axolemma / glial cell projection / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / negative regulation of mitochondrial fission / neurofibrillary tangle assembly / positive regulation of axon extension / regulation of cellular response to heat / synapse assembly / Activation of AMPK downstream of NMDARs / regulation of long-term synaptic depression / positive regulation of superoxide anion generation / positive regulation of protein localization / cellular response to brain-derived neurotrophic factor stimulus / supramolecular fiber organization / cytoplasmic microtubule organization / regulation of calcium-mediated signaling / somatodendritic compartment / axon cytoplasm / positive regulation of microtubule polymerization / astrocyte activation / phosphatidylinositol binding / enzyme inhibitor activity / nuclear periphery / stress granule assembly / protein phosphatase 2A binding / regulation of microtubule cytoskeleton organization / cellular response to reactive oxygen species / Hsp90 protein binding / microglial cell activation / cellular response to nerve growth factor stimulus / synapse organization / PKR-mediated signaling / regulation of synaptic plasticity / protein homooligomerization / response to lead ion / SH3 domain binding / microtubule cytoskeleton organization / memory / regulation of autophagy / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / protein-folding chaperone binding / cellular response to heat / microtubule cytoskeleton / growth cone / actin binding / cell body / double-stranded DNA binding / protein-macromolecule adaptor activity / microtubule binding / sequence-specific DNA binding / dendritic spine / amyloid fibril formation / microtubule / learning or memory / neuron projection / membrane raft / axon / negative regulation of gene expression / neuronal cell body / DNA damage response / dendrite / protein kinase binding / enzyme binding / mitochondrion / DNA binding / RNA binding / extracellular region / identical protein binding / nucleus
Similarity search - Function
Microtubule-associated protein Tau / Microtubule associated protein, tubulin-binding repeat / 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)
Methodhelical reconstruction / cryo EM / Resolution: 2.69 Å
AuthorsDuan P / Dregni AJ / Xu H / Changolkar L / Lee VM-Y / Hong M
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Aging (NIH/NIA)AG059661 United States
CitationJournal: J Biol Chem / Year: 2024
Title: Alzheimer's disease seeded tau forms paired helical filaments yet lacks seeding potential.
Authors: Pu Duan / Aurelio J Dregni / Hong Xu / Lakshmi Changolkar / Virginia M-Y Lee / Edward B Lee / Mei Hong /
Abstract: Alzheimer's disease (AD) and many other neurodegenerative diseases are characterized by pathological aggregation of the protein tau. These tau aggregates spread in a stereotypical spatiotemporal ...Alzheimer's disease (AD) and many other neurodegenerative diseases are characterized by pathological aggregation of the protein tau. These tau aggregates spread in a stereotypical spatiotemporal pattern in the brain of each disease, suggesting that the misfolded tau can recruit soluble monomers to adopt the same pathological structure. To investigate whether recruited tau indeed adopts the same structure and properties as the original seed, here we template recombinant full-length 0N3R tau, 0N4R tau, and an equimolar mixture of the two using sarkosyl-insoluble tau extracted from AD brain and determine the structures of the resulting fibrils using cryoelectron microscopy. We show that these cell-free amplified tau fibrils adopt the same molecular structure as the AD paired-helical filament (PHF) tau but are unable to template additional monomers. Therefore, the PHF structure alone is insufficient for defining the pathological properties of AD tau, and other biochemical components such as tau posttranslational modifications, other proteins, polyanionic cofactors, and salt are required for the prion-like serial propagation of tauopathies.
History
DepositionJul 1, 2024-
Header (metadata) releaseSep 11, 2024-
Map releaseSep 11, 2024-
UpdateOct 2, 2024-
Current statusOct 2, 2024Processing site: RCSB / Status: Released

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Structure visualization

Downloads & links

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Map

FileDownload / File: emd_45589.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 384 pix.
= 407.04 Å		1.06 Å/pix.
x 384 pix.
= 407.04 Å		1.06 Å/pix.
x 384 pix.
= 407.04 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02
Minimum - Maximum-0.044607073 - 0.09825537
Average (Standard dev.)0.00003961632 (±0.0013951305)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 407.03998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_45589_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Amyloid Fibril of Mixed 0N4R and 0N3R Tau Seeded with Alzheimer's...

EntireName: Amyloid Fibril of Mixed 0N4R and 0N3R Tau Seeded with Alzheimer's Disease Tau from Human Brain
Components
  • Complex: Amyloid Fibril of Mixed 0N4R and 0N3R Tau Seeded with Alzheimer's Disease Tau from Human Brain
    • Protein or peptide: Isoform Fetal-tau of Microtubule-associated protein tau

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Supramolecule #1: Amyloid Fibril of Mixed 0N4R and 0N3R Tau Seeded with Alzheimer's...

SupramoleculeName: Amyloid Fibril of Mixed 0N4R and 0N3R Tau Seeded with Alzheimer's Disease Tau from Human Brain
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Isoform Fetal-tau of Microtubule-associated protein tau

MacromoleculeName: Isoform Fetal-tau of Microtubule-associated protein tau
type: protein_or_peptide / ID: 1
Details: Mixture of 0N4R and 0N3R monomers templated by Alzheimer's Disease Seeds
Number of copies: 6 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.821121 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAEPRQEFEV MEDHAGTYGL GDRKDQGGYT MHQDQEGDTD AGLKAEEAGI GDTPSLEDEA AGHVTQARMV SKSKDGTGSD DKKAKGADG KTKIATPRGA APPGQKGQAN ATRIPAKTPP APKTPPSSGE PPKSGDRSGY SSPGSPGTPG SRSRTPSLPT P PTREPKKV ...String:
MAEPRQEFEV MEDHAGTYGL GDRKDQGGYT MHQDQEGDTD AGLKAEEAGI GDTPSLEDEA AGHVTQARMV SKSKDGTGSD DKKAKGADG KTKIATPRGA APPGQKGQAN ATRIPAKTPP APKTPPSSGE PPKSGDRSGY SSPGSPGTPG SRSRTPSLPT P PTREPKKV AVVRTPPKSP SSAKSRLQTA PVPMPDLKNV KSKIGSTENL KHQPGGGKVQ IVYKPVDLSK VTSKCGSLGN IH HKPGGGQ VEVKSEKLDF KDRVQSKIGS LDNITHVPGG GNKKIETHKL TFRENAKAKT DHGAEIVYKS PVVSGDTSPR HLS NVSSTG SIDMVDSPQL ATLADEVSAS LAKQGL

UniProtKB: Microtubule-associated protein tau

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statefilament

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Sample preparation

Concentration1.6 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK I

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 7917 / Average exposure time: 2.25 sec. / Average electron dose: 45.7 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.2 µm / Nominal magnification: 81000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 2.376 Å
Applied symmetry - Helical parameters - Δ&Phi: 179.51 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 2.69 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 4.0) / Number images used: 55886
Segment selectionNumber selected: 2966238 / Software - Name: RELION (ver. 4.0)
Software - details: Autopicking with Topaz done in RELION using -f -t -7
Startup modelType of model: EMDB MAP
EMDB ID:

23894

Final angle assignmentType: NOT APPLICABLE
FSC plot (resolution estimation)

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