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- PDB-8q8r: Tau - AD-PHF -

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Basic information

Entry
Database: PDB / ID: 8q8r
TitleTau - AD-PHF
ComponentsIsoform Tau-D of Microtubule-associated protein tau
KeywordsPROTEIN FIBRIL / Amyloid / tau
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 / axon development / axonal transport of mitochondrion / rRNA metabolic process / central nervous system neuron development / regulation of mitochondrial fission / regulation of microtubule-based movement / intracellular distribution of mitochondria / regulation of chromosome organization / 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 / Caspase-mediated cleavage of cytoskeletal proteins / glial cell projection / regulation of microtubule polymerization or depolymerization / negative regulation of mitochondrial fission / axolemma / positive regulation of axon extension / neurofibrillary tangle assembly / protein polymerization / positive regulation of microtubule polymerization / regulation of cellular response to heat / positive regulation of protein localization / Activation of AMPK downstream of NMDARs / positive regulation of superoxide anion generation / regulation of calcium-mediated signaling / cytoplasmic microtubule organization / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / axon cytoplasm / supramolecular fiber organization / synapse assembly / somatodendritic compartment / astrocyte activation / nuclear periphery / phosphatidylinositol binding / protein phosphatase 2A binding / stress granule assembly / enzyme inhibitor activity / regulation of autophagy / regulation of microtubule cytoskeleton organization / cellular response to reactive oxygen species / microglial cell activation / cellular response to nerve growth factor stimulus / Hsp90 protein binding / regulation of synaptic plasticity / memory / SH3 domain binding / synapse organization / protein homooligomerization / microtubule cytoskeleton organization / PKR-mediated signaling / response to lead ion / neuron projection development / cytoplasmic ribonucleoprotein granule / microtubule cytoskeleton / cell-cell signaling / cellular response to heat / single-stranded DNA binding / growth cone / protein-folding chaperone binding / actin binding / cell body / double-stranded DNA binding / sequence-specific DNA binding / microtubule binding / amyloid fibril formation / dendritic spine / microtubule / learning or memory / protein-macromolecule adaptor activity / 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: 2.1 Å
AuthorsLovestam, S. / Li, D. / Scheres, S.H.W. / Goedert, M.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom) United Kingdom
CitationJournal: Nature / Year: 2024
Title: Disease-specific tau filaments assemble via polymorphic intermediates.
Authors: Sofia Lövestam / David Li / Jane L Wagstaff / Abhay Kotecha / Dari Kimanius / Stephen H McLaughlin / Alexey G Murzin / Stefan M V Freund / Michel Goedert / Sjors H W Scheres /
Abstract: Intermediate species in the assembly of amyloid filaments are believed to play a central role in neurodegenerative diseases and may constitute important targets for therapeutic intervention. However, ...Intermediate species in the assembly of amyloid filaments are believed to play a central role in neurodegenerative diseases and may constitute important targets for therapeutic intervention. However, structural information about intermediate species has been scarce and the molecular mechanisms by which amyloids assemble remain largely unknown. Here we use time-resolved cryogenic electron microscopy to study the in vitro assembly of recombinant truncated tau (amino acid residues 297-391) into paired helical filaments of Alzheimer's disease or into filaments of chronic traumatic encephalopathy. We report the formation of a shared first intermediate amyloid filament, with an ordered core comprising residues 302-316. Nuclear magnetic resonance indicates that the same residues adopt rigid, β-strand-like conformations in monomeric tau. At later time points, the first intermediate amyloid disappears and we observe many different intermediate amyloid filaments, with structures that depend on the reaction conditions. At the end of both assembly reactions, most intermediate amyloids disappear and filaments with the same ordered cores as those from human brains remain. Our results provide structural insights into the processes of primary and secondary nucleation of amyloid assembly, with implications for the design of new therapies.
History
DepositionAug 18, 2023Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 20, 2023Provider: repository / Type: Initial release
Revision 1.1Dec 6, 2023Group: Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.year
Revision 1.2Dec 13, 2023Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title ..._citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.3Jan 17, 2024Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.year / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

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


Theoretical massNumber of molelcules
Total (without water)240,0176
Polymers240,0176
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein
Isoform Tau-D of Microtubule-associated protein tau


Mass: 40002.773 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: MAPT / Production host: Escherichia coli (E. coli) / References: UniProt: P10636

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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 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.2
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: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM software
IDNameVersionCategory
2PHENIXdev_3965:model refinement
3RELIONimage acquisition
13RELION43D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 179.494 ° / Axial rise/subunit: 2.38 Å / Axial symmetry: C1
3D reconstructionResolution: 2.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 72387 / Symmetry type: HELICAL

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