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- PDB-8byn: Chronic traumatic encephalopathy tau filaments with PET ligand fl... -

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Basic information

Entry
Database: PDB / ID: 8byn
TitleChronic traumatic encephalopathy tau filaments with PET ligand flortaucipir
ComponentsMicrotubule-associated protein tau
KeywordsPROTEIN FIBRIL / Chronic traumatic encephalopathy / Primary age-related tauopathy / Tau filaments / PET ligand / Flortaucipir
Function / homology
Function and homology information


plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / main axon / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding ...plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / main axon / axonal transport / tubulin complex / positive regulation of protein localization to synapse / phosphatidylinositol bisphosphate binding / negative regulation of tubulin deacetylation / generation of neurons / rRNA metabolic process / axonal transport of mitochondrion / regulation of chromosome organization / regulation of mitochondrial fission / axon development / regulation of long-term synaptic depression / central nervous system neuron development / intracellular distribution of mitochondria / regulation of microtubule polymerization / microtubule polymerization / lipoprotein particle binding / minor groove of adenine-thymine-rich DNA binding / negative regulation of mitochondrial membrane potential / dynactin binding / apolipoprotein binding / axolemma / protein polymerization / glial cell projection / negative regulation of mitochondrial fission / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / positive regulation of axon extension / neurofibrillary tangle assembly / Activation of AMPK downstream of NMDARs / regulation of cellular response to heat / supramolecular fiber organization / synapse assembly / positive regulation of protein localization / cellular response to brain-derived neurotrophic factor stimulus / somatodendritic compartment / regulation of calcium-mediated signaling / cytoplasmic microtubule organization / positive regulation of microtubule polymerization / axon cytoplasm / stress granule assembly / phosphatidylinositol binding / regulation of microtubule cytoskeleton organization / nuclear periphery / protein phosphatase 2A binding / positive regulation of superoxide anion generation / cellular response to reactive oxygen species / astrocyte activation / Hsp90 protein binding / microglial cell activation / response to lead ion / cellular response to nerve growth factor stimulus / synapse organization / PKR-mediated signaling / protein homooligomerization / regulation of synaptic plasticity / SH3 domain binding / microtubule cytoskeleton organization / cytoplasmic ribonucleoprotein granule / memory / neuron projection development / cell-cell signaling / single-stranded DNA binding / protein-folding chaperone binding / actin binding / cellular response to heat / microtubule cytoskeleton / cell body / growth cone / double-stranded DNA binding / protein-macromolecule adaptor activity / microtubule binding / dendritic spine / sequence-specific DNA binding / amyloid fibril formation / microtubule / learning or memory / neuron projection / regulation of autophagy / membrane raft / axon / negative regulation of gene expression / neuronal cell body / dendrite / DNA damage response / protein kinase binding / enzyme binding / mitochondrion / DNA binding / RNA binding / extracellular region / identical protein binding / nucleus / plasma membrane
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
Chem-S9C / Microtubule-associated protein tau
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 2.6 Å
AuthorsShi, Y. / Ghetti, B. / Goedert, M. / Scheres, S.H.W.
Funding support United Kingdom, Switzerland, United States, 6items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_U105184291 United Kingdom
Medical Research Council (MRC, United Kingdom)MC_UP_A025_1013 United Kingdom
Innovative Medicines Initiative116060 Switzerland
National Institutes of Health/National Institute on Aging (NIH/NIA)P30-AG010133 United States
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)UO1-NS110437 United States
National Institutes of Health/National Institute on Aging (NIH/NIA)RF1-AG071177 United States
CitationJournal: J Mol Biol / Year: 2023
Title: Cryo-EM Structures of Chronic Traumatic Encephalopathy Tau Filaments with PET Ligand Flortaucipir.
Authors: Yang Shi / Bernardino Ghetti / Michel Goedert / Sjors H W Scheres /
Abstract: Positron emission tomography (PET) imaging allows monitoring the progression of amyloid aggregation in the living brain. [F]-Flortaucipir is the only approved PET tracer compound for the ...Positron emission tomography (PET) imaging allows monitoring the progression of amyloid aggregation in the living brain. [F]-Flortaucipir is the only approved PET tracer compound for the visualisation of tau aggregation. Here, we describe cryo-EM experiments on tau filaments in the presence and absence of flortaucipir. We used tau filaments isolated from the brain of an individual with Alzheimer's disease (AD), and from the brain of an individual with primary age-related tauopathy (PART) with a co-pathology of chronic traumatic encephalopathy (CTE). Unexpectedly, we were unable to visualise additional cryo-EM density for flortaucipir for AD paired helical or straight filaments (PHFs or SFs), but we did observe density for flortaucipir binding to CTE Type I filaments from the case with PART. In the latter, flortaucipir binds in a 1:1 molecular stoichiometry with tau, adjacent to lysine 353 and aspartate 358. By adopting a tilted geometry with respect to the helical axis, the 4.7 Å distance between neighbouring tau monomers is reconciled with the 3.5 Å distance consistent with π-π-stacking between neighbouring molecules of flortaucipir.
History
DepositionDec 13, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jan 11, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 5, 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.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Nov 1, 2023Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / citation / Item: _citation.journal_volume

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Microtubule-associated protein tau
B: Microtubule-associated protein tau
C: Microtubule-associated protein tau
D: Microtubule-associated protein tau
E: Microtubule-associated protein tau
F: Microtubule-associated protein tau
hetero molecules


Theoretical massNumber of molelcules
Total (without water)277,09912
Polymers275,5196
Non-polymers1,5806
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area26990 Å2
ΔGint-71 kcal/mol
Surface area25460 Å2

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Components

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


Mass: 45919.871 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P10636
#2: Chemical
ChemComp-S9C / 7-(6-fluoranylpyridin-3-yl)-5~{H}-pyrido[4,3-b]indole


Mass: 263.269 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C16H10FN3 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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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: Sarkosyl-insoluble fraction from the hippocampus of an individual with primary age-related tauopathy
Type: TISSUE / Entity ID: #1 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
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: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 179.43 ° / Axial rise/subunit: 2.37 Å / Axial symmetry: C1
3D reconstructionResolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 58019 / Symmetry type: HELICAL

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