9CK6 | pdb_00009ck6

Cryo-EM structure of sarkosyl insoluble amyloid-beta 42 filaments extracted from human brain tissue

• PDB DOI: https://doi.org/10.2210/pdb9CK6/pdb
• EM Map EMD-45642: EMDB EMDataResource

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


• Deposited: 2024-07-08 Released: 2026-01-14 
• Deposition Author(s): Butan, C., Strittmatter, 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: 3.00 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Starting Model: experimental

Literature

Cryo-EM structure of sarkosyl insoluble amyloid-beta 42 filaments extracted from human brain tissue

Butan, C., Strittmatter, S.

To be published.

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: 45.2 kDa 
• Atom Count: 2,510 
• Modeled Residue Count: 340 
• Deposited Residue Count: 420 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-amyloid protein 42	A [auth R], B [auth A], C [auth B], D [auth C], E [auth D], F [auth E], G [auth F], H [auth G], I [auth H], J [auth I]	42	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P05067 (Homo sapiens) Explore P05067  Go to UniProtKB:  P05067
PHAROS:  P05067 GTEx:  ENSG00000142192

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	RELION	4.0

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-01-14 
Deposition Author(s): Butan, C., Strittmatter, S.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute on Aging (NIH/NIA)	United States	R01 AG034924
National Institutes of Health/National Institute on Aging (NIH/NIA)	United States	RF1 AG070926
National Institutes of Health/National Institute on Aging (NIH/NIA)	United States	P30 AG066508

Revision History  

• Version 1.0: 2026-01-14
  Type: Initial release