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- PDB-7pqp: tau-microtubule structural ensemble based on CryoEM data -

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Basic information

Entry
Database: PDB / ID: 7pqp
Titletau-microtubule structural ensemble based on CryoEM data
Components
  • Isoform Tau-F of Microtubule-associated protein tau
  • Tubulin alpha-1B chain
  • Tubulin beta chain
KeywordsSTRUCTURAL PROTEIN / Complex
Function / homology
Function and homology information


Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling ...Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / Recruitment of NuMA to mitotic centrosomes / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / COPI-independent Golgi-to-ER retrograde traffic / MHC class II antigen presentation / COPI-mediated anterograde transport / 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 / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microglial cell activation / response to lead ion / Hsp90 protein binding / regulation of synaptic plasticity / PKR-mediated signaling / protein homooligomerization / structural constituent of cytoskeleton / cytoplasmic ribonucleoprotein granule / memory / microtubule cytoskeleton organization / cellular response to reactive oxygen species / SH3 domain binding / neuron projection development / activation of cysteine-type endopeptidase activity involved in apoptotic process / microtubule cytoskeleton / protein-macromolecule adaptor activity / single-stranded 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. / Tubulin-beta mRNA autoregulation signal. / Alpha tubulin / Beta tubulin, autoregulation binding site / Beta tubulin ...: / 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. / Tubulin-beta mRNA autoregulation signal. / Alpha tubulin / Beta tubulin, autoregulation binding site / Beta tubulin / Tubulin / Tubulin, C-terminal / Tubulin C-terminal domain / Tubulin, conserved site / Tubulin subunits alpha, beta, and gamma signature. / Tubulin/FtsZ family, C-terminal domain / Tubulin/FtsZ-like, C-terminal domain / Tubulin/FtsZ, C-terminal / Tubulin/FtsZ, 2-layer sandwich domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ family, GTPase domain / Tubulin/FtsZ, GTPase domain / Tubulin/FtsZ, GTPase domain superfamily
Similarity search - Domain/homology
GUANOSINE-5'-DIPHOSPHATE / GUANOSINE-5'-TRIPHOSPHATE / Tubulin beta chain / Microtubule-associated protein tau / Tubulin alpha-1B chain
Similarity search - Component
Biological speciesSus scrofa (pig)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / negative staining / cryo EM / Resolution: 4.1 Å
AuthorsBrotzakis, Z.F. / Vendruscolo, M.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Royal Society United Kingdom
CitationJournal: ACS Cent Sci / Year: 2021
Title: A Structural Ensemble of a Tau-Microtubule Complex Reveals Regulatory Tau Phosphorylation and Acetylation Mechanisms.
Authors: Z Faidon Brotzakis / Philip R Lindstedt / Ross J Taylor / Dillon J Rinauro / Nicholas C T Gallagher / Gonçalo J L Bernardes / Michele Vendruscolo /
Abstract: Tau is a microtubule-associated protein that regulates the stability of microtubules. We use metainference cryoelectron microscopy, an integrative structural biology approach, to determine an ...Tau is a microtubule-associated protein that regulates the stability of microtubules. We use metainference cryoelectron microscopy, an integrative structural biology approach, to determine an ensemble of conformations representing the structure and dynamics of a tau-microtubule complex comprising the entire microtubule-binding region of tau (residues 202-395). We thus identify the ground state of the complex and a series of excited states of lower populations. A comparison of the interactions in these different states reveals positions along the tau sequence that are important to determine the overall stability of the tau-microtubule complex. This analysis leads to the identification of positions where phosphorylation and acetylation events have destabilizing effects, which we validate by using site-specific post-translationally modified tau variants obtained by chemical mutagenesis. Taken together, these results illustrate how the simultaneous determination of ground and excited states of macromolecular complexes reveals functional and regulatory mechanisms.
History
DepositionSep 18, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 15, 2021Provider: repository / Type: Initial release
Revision 1.1Jan 12, 2022Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title

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Structure visualization

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Assembly

Deposited unit
A: Tubulin beta chain
B: Tubulin alpha-1B chain
C: Tubulin beta chain
D: Tubulin alpha-1B chain
E: Tubulin beta chain
F: Tubulin alpha-1B chain
G: Tubulin beta chain
H: Tubulin alpha-1B chain
I: Tubulin beta chain
J: Tubulin alpha-1B chain
K: Tubulin beta chain
L: Tubulin alpha-1B chain
M: Tubulin beta chain
N: Tubulin alpha-1B chain
O: Isoform Tau-F of Microtubule-associated protein tau
hetero molecules


Theoretical massNumber of molelcules
Total (without water)728,46136
Polymers721,52615
Non-polymers6,93521
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area78320 Å2
ΔGint-515 kcal/mol
Surface area234320 Å2

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Components

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Protein , 3 types, 15 molecules ACEGIKMBDFHJLNO

#1: Protein
Tubulin beta chain / Beta-tubulin


Mass: 49907.770 Da / Num. of mol.: 7
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Sus scrofa (pig) / Production host: Escherichia coli (E. coli) / References: UniProt: P02554
#2: Protein
Tubulin alpha-1B chain / Alpha-tubulin ubiquitous / Tubulin K-alpha-1 / Tubulin alpha-ubiquitous chain


Mass: 50204.445 Da / Num. of mol.: 7
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Sus scrofa (pig) / Gene: TUBA1B / Production host: Escherichia coli (E. coli) / References: UniProt: Q2XVP4
#3: Protein Isoform Tau-F of Microtubule-associated protein tau / Neurofibrillary tangle protein / Paired helical filament-tau / PHF-tau


Mass: 20740.863 Da / Num. of mol.: 1
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

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Non-polymers , 3 types, 21 molecules

#4: Chemical
ChemComp-GDP / GUANOSINE-5'-DIPHOSPHATE / Guanosine diphosphate


Type: RNA linking / Mass: 443.201 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C10H15N5O11P2 / Feature type: SUBJECT OF INVESTIGATION / Comment: GDP, energy-carrying molecule*YM
#5: Chemical
ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE / Guanosine triphosphate


Mass: 523.180 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: GTP, energy-carrying molecule*YM
#6: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION

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Details

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: single particle reconstruction

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Sample preparation

Component
IDNameTypeDetailsEntity IDParent-IDSource
1tau-microtubule structural ensembleCOMPLEXtau-microtubule structural ensemble based on CryoEM data#1-#30MULTIPLE SOURCES
2Tubulin beta chain and Tubulin alpha-1B chainCOMPLEXtau-microtubule structural ensemble based on CryoEM data#1-#21RECOMBINANT
3Isoform Tau-F of Microtubule-associated protein tauCOMPLEXtau-microtubule structural ensemble based on CryoEM data#31RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Sus scrofa (pig)9823
23Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
12Escherichia coli (E. coli)562
23Escherichia coli (E. coli)562
Buffer solutionpH: 6.8
SpecimenConc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: YES / Vitrification applied: YES
EM stainingType: NONE / Material: SDS PAGE and Coomassie
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE

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Electron microscopy imaging

MicroscopyModel: FEI TITAN
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Specimen holderCryogen: NITROGEN / Specimen holder model: GATAN LIQUID NITROGEN
Image recordingElectron dose: 27.5 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionDetails: Images were drift-corrected using UCSF motioncorr software . CTFFIND4 was used to estimate CTFs for the drift-corrected images
Type: PHASE FLIPPING ONLY
3D reconstructionResolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 25963 / Symmetry type: POINT

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