9OBK | pdb_00009obk

A-beta42-Met-R-SO amyloidal fibril

PDB DOI: https://doi.org/10.2210/pdb9OBK/pdb
EM Map EMD-70294: EMDB EMDataResource

Classification: PROTEIN FIBRIL
Organism(s): Homo sapiens
Mutation(s): No

Deposited: 2025-04-22 Released: 2026-05-06
Deposition Author(s): Chan, K.L., Boyer, D., Balasco Serrao, V.H., Raskatov, J.A.
Funding Organization(s): National Institutes of Health/National Institute on Aging (NIH/NIA)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 3.01 Å
Aggregation State: FILAMENT
Reconstruction Method: HELICAL

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Validation slider image for 9OBK

This is version 1.0 of the entry. See complete history.

Literature

Impact of stereospecific methionine oxidation on A-beta 42 fibril structure

Chan, K.L., Boyer, D., Balasco Serrao, V.H., Raskatov, J.A.

To be published.

Macromolecule Content

Total Structure Weight: 29.18 kDa
Atom Count: 2,040
Modeled Residue Count: 280
Deposited Residue Count: 280
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Amyloid-beta precursor protein	A, B, C, D, E A, B, C, D, E, F, G, H, I, J	28	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
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	P05067
Sequence Annotations Expand
Reference Sequence

Small Molecules

Modified Residues 1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SME Query on SME	A, B, C, D, E A, B, C, D, E, F, G, H, I, J	L-PEPTIDE LINKING	C₅ H₁₁ N O₃ S		MET

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 3.01 Å
Aggregation State: FILAMENT
Reconstruction Method: HELICAL

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21.2_5419
RECONSTRUCTION	cryoSPARC	4.7

Structure Validation

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-05-06

Deposition Author(s):

Balasco Serrao, V.H.

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute on Aging (NIH/NIA)	United States	5R21AG070888

Revision History (Full details and data files)

Version 1.0: 2026-05-06
Type: Initial release

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.