5V5B

KVQIINKKLD, Structure of the amyloid spine from microtubule associated protein tau Repeat 2


Experimental Data Snapshot

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 1.50 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.193 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure-based inhibitors of tau aggregation.

Seidler, P.M.Boyer, D.R.Rodriguez, J.A.Sawaya, M.R.Cascio, D.Murray, K.Gonen, T.Eisenberg, D.S.

(2018) Nat Chem 10: 170-176

  • DOI: 10.1038/nchem.2889
  • Primary Citation of Related Structures:  
    5V5B, 5V5C

  • PubMed Abstract: 
  • Aggregated tau protein is associated with over 20 neurological disorders, which include Alzheimer's disease. Previous work has shown that tau's sequence segments VQIINK and VQIVYK drive its aggregation, but inhibitors based on the structure of the VQIVYK segment only partially inhibit full-length tau aggregation and are ineffective at inhibiting seeding by full-length fibrils ...

    Aggregated tau protein is associated with over 20 neurological disorders, which include Alzheimer's disease. Previous work has shown that tau's sequence segments VQIINK and VQIVYK drive its aggregation, but inhibitors based on the structure of the VQIVYK segment only partially inhibit full-length tau aggregation and are ineffective at inhibiting seeding by full-length fibrils. Here we show that the VQIINK segment is the more powerful driver of tau aggregation. Two structures of this segment determined by the cryo-electron microscopy method micro-electron diffraction explain its dominant influence on tau aggregation. Of practical significance, the structures lead to the design of inhibitors that not only inhibit tau aggregation but also inhibit the ability of exogenous full-length tau fibrils to seed intracellular tau in HEK293 biosensor cells into amyloid. We also raise the possibility that the two VQIINK structures represent amyloid polymorphs of tau that may account for a subset of prion-like strains of tau.


    Organizational Affiliation

    Howard Hughes Medical Institute, UCLA, Los Angeles, California 90095, USA.



Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Microtubule-associated protein tauA10Homo sapiensMutation(s): 0 
Gene Names: MAPTMAPTLMTBT1TAU
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens)
Explore P10636 
Go to UniProtKB:  P10636
PHAROS:  P10636
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP10636
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON CRYSTALLOGRAPHY
  • Resolution: 1.50 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.193 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 27.12α = 90
b = 4.83β = 100.53
c = 32.43γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Aging (NIH/NIA)United States1R01 AG029430
National Institutes of Health/National Institute on Aging (NIH/NIA)United StatesRF1 AG054022
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)United States1F32 NS095661
BrightFocus FoundationUnited StatesA2016588F

Revision History  (Full details and data files)

  • Version 1.0: 2018-02-07
    Type: Initial release
  • Version 1.1: 2018-02-14
    Changes: Author supporting evidence
  • Version 1.2: 2018-06-06
    Changes: Data collection, Refinement description
  • Version 1.3: 2019-12-18
    Changes: Author supporting evidence