8SEH | pdb_00008seh

PHF Tau from Down Syndrome

• PDB DOI: https://doi.org/10.2210/pdb8SEH/pdb
• EM Map EMD-40411: EMDB EMDataResource

• Classification: NEUROPEPTIDE
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2023-04-10 Released: 2024-04-03 
• Deposition Author(s): Hoq, M.R., Bharath, S.R., Jiang, W., Vago, F.S.
• Funding Organization(s): National Institutes of Health/National Institute on Aging (NIH/NIA)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.90 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

Cryo-EM structures of amyloid-beta and tau filaments in Down syndrome.

Fernandez, A., Hoq, M.R., Hallinan, G.I., Li, D., Bharath, S.R., Vago, F.S., Zhang, X., Ozcan, K.A., Newell, K.L., Garringer, H.J., Jiang, W., Ghetti, B., Vidal, R.

(2024) Nat Struct Mol Biol 31: 903-909

• PubMed: 38553642 
• DOI: https://doi.org/10.1038/s41594-024-01252-3
• Primary Citation Related Structures: 
  8SEH, 8SEI, 8SEJ, 8SEK, 8SEL


• PubMed Abstract: 
  

  Adult individuals with Down syndrome (DS) develop Alzheimer disease (AD). Whether there is a difference between AD in DS and AD regarding the structure of amyloid-β (Aβ) and tau filaments is unknown. Here we report the structure of Aβ and tau filaments from two DS brains. We found two Aβ ₄₀ filaments (types IIIa and IIIb) that differ from those previously reported in sporadic AD and two types of Aβ ₄₂ filaments (I and II) identical to those found in sporadic and familial AD. Tau filaments (paired helical filaments and straight filaments) were identical to those in AD, supporting the notion of a common mechanism through which amyloids trigger aggregation of tau. This knowledge is important for understanding AD in DS and assessing whether adults with DS could be included in AD clinical trials.

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Organizational Affiliation: 
• Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA.
Department of Biological Sciences, Markey Center for Structural Biology, Purdue University, West Lafayette, IN, USA.
Department of Biological Sciences, Markey Center for Structural Biology, Purdue University, West Lafayette, IN, USA. [e-mail].
Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA. [e-mail].
Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA. [e-mail].
Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA. [e-mail].

Biological Assembly 1  

Global Symmetry: Helical - H  (Explore in 3D)
Global Stoichiometry: Homo 10-mer - A10 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 79.4 kDa 
• Atom Count: 5,570 
• Modeled Residue Count: 730 
• Deposited Residue Count: 730 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Microtubule-associated protein tau	A, B, C, D, E, F, G, H, I, J	73	Homo sapiens	Mutation(s): 0  Gene Names: MAPT, MAPTL, MTBT1, TAU
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens) Explore P10636  Go to UniProtKB:  P10636
PHAROS:  P10636 GTEx:  ENSG00000186868

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.90 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2024-04-03 
Deposition Author(s): Hoq, M.R., Bharath, S.R., Jiang, W., Vago, F.S.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute on Aging (NIH/NIA)	United States	5U01NS110437 and and 1RF1AG071177

Revision History  

• Version 1.0: 2024-04-03
  Type: Initial release
  
• Version 1.1: 2024-04-10
  Changes: Database references
• Version 1.2: 2024-06-26
  Changes: Data collection, Database references