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- PDB-9o8e: amyloid fibril of recombinant full-length 2N4R tau complexed with... -

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Basic information

Entry
Database: PDB / ID: 9o8e
Titleamyloid fibril of recombinant full-length 2N4R tau complexed with unfractionated mouse liver RNA and seeded by Alzheimer's disease tau fibrils
ComponentsIsoform Tau-F of Microtubule-associated protein tau
KeywordsPROTEIN FIBRIL / amyloid 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 microtubule-based movement / regulation of chromosome organization / intracellular distribution of mitochondria / central nervous system neuron development / 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 / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / negative regulation of mitochondrial fission / glial cell projection / neurofibrillary tangle assembly / positive regulation of axon extension / regulation of cellular response to heat / positive regulation of microtubule polymerization / Activation of AMPK downstream of NMDARs / positive regulation of superoxide anion generation / positive regulation of protein localization / cellular response to brain-derived neurotrophic factor stimulus / supramolecular fiber organization / regulation of long-term synaptic depression / cytoplasmic microtubule organization / somatodendritic compartment / regulation of calcium-mediated signaling / synapse assembly / axon cytoplasm / astrocyte activation / phosphatidylinositol binding / nuclear periphery / enzyme inhibitor activity / stress granule assembly / protein phosphatase 2A binding / regulation of microtubule cytoskeleton organization / regulation of autophagy / cellular response to reactive oxygen species / microglial cell activation / cellular response to nerve growth factor stimulus / Hsp90 protein binding / protein homooligomerization / regulation of synaptic plasticity / synapse organization / PKR-mediated signaling / SH3 domain binding / response to lead ion / microtubule cytoskeleton organization / memory / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / cellular response to heat / protein-folding chaperone binding / growth cone / microtubule cytoskeleton / actin binding / cell body / double-stranded DNA binding / microtubule binding / sequence-specific DNA binding / amyloid fibril formation / dendritic spine / microtubule / protein-macromolecule adaptor activity / learning or memory / neuron projection / membrane raft / negative regulation of gene expression / axon / 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)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsJiang, Y.X. / Sawaya, M.R. / Abskharon, R. / Ge, P. / Boyer, D.R. / Eisenberg, D.S.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute on Aging (NIH/NIA)R01 AG070895 United States
National Institutes of Health/National Institute on Aging (NIH/NIA)RF1 AG065407 United States
CitationJournal: To Be Published
Title: RNA contributes to polymorphism of tau amyloid fibrils
Authors: Abskharon, R. / Jiang, Y.X. / Ge, P. / Sawaya, M.R. / Zhang, J. / Boyer, D.R. / Dolinsky, J.L. / Cascio, D. / Guo, F. / Eisenberg, D.S.
History
DepositionApr 15, 2025Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 18, 2026Provider: repository / Type: Initial release
Revision 1.0Mar 18, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Mar 18, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 18, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Mar 18, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Mar 18, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Isoform Tau-F of Microtubule-associated protein tau
B: Isoform Tau-F of Microtubule-associated protein tau
C: Isoform Tau-F of Microtubule-associated protein tau
D: Isoform Tau-F of Microtubule-associated protein tau
E: Isoform Tau-F of Microtubule-associated protein tau


Theoretical massNumber of molelcules
Total (without water)234,9555
Polymers234,9555
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Isoform Tau-F of Microtubule-associated protein tau / Neurofibrillary tangle protein / Paired helical filament-tau / PHF-tau


Mass: 46991.012 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: MAPT, MAPTL, MTBT1, TAU / Production host: Escherichia coli (E. coli) / References: UniProt: P10636
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: amyloid fibril of recombinant full-length 2N4R tau complexed with unfractionated mouse liver RNA and seeded by Alzheimer's disease tau fibrils
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2300 nm / Nominal defocus min: 600 nm
Image recordingElectron dose: 36 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21_5207 / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: -1.03 ° / Axial rise/subunit: 4.839 Å / Axial symmetry: C1
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 54683 / Symmetry type: HELICAL
RefinementHighest resolution: 3.1 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0034245
ELECTRON MICROSCOPYf_angle_d0.6355730
ELECTRON MICROSCOPYf_dihedral_angle_d11.8781565
ELECTRON MICROSCOPYf_chiral_restr0.044650
ELECTRON MICROSCOPYf_plane_restr0.006750

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