8SPA | pdb_00008spa

Structural insights into cellular control of the human CPEB3 prion, functionally regulated by a labile-amyloid-forming segment

• PDB DOI: https://doi.org/10.2210/pdb8SPA/pdb
• EM Map EMD-40677: EMDB EMDataResource

• Classification: PROTEIN FIBRIL
• Organism(s): Homo sapiens
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2023-05-02 Released: 2024-05-08 
• Deposition Author(s): Flores, M.D., Sawaya, M.R., Boyer, D.R., Zink, S., Fioriti, L., Rodriguez, J.A.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Science Foundation (NSF, United States), The Pew Charitable Trusts, David and Lucile Packard Foundation

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Experimental Data Snapshot

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

Literature

Structure of a reversible amyloid fibril formed by the CPEB3 prion-like domain reveals a core sequence involved in translational regulation

Flores, M.D., Sawaya, M.R., Boyer, D.R., Zink, S., Fioriti, L., Rodriguez, J.A.

To be published.

Biological Assembly 1  

Global Symmetry: Helical - H  (Explore in 3D)
Global Stoichiometry: Homo 5-mer - A5 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 26.4 kDa 
• Atom Count: 1,870 
• Modeled Residue Count: 245 
• Deposited Residue Count: 245 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytoplasmic polyadenylation element-binding protein 3	A, B, C, D, E	49	Homo sapiens	Mutation(s): 0  Gene Names: CPEB3, KIAA0940
UniProt & NIH Common Fund Data Resources
Find proteins for Q8NE35 (Homo sapiens) Explore Q8NE35  Go to UniProtKB:  Q8NE35
PHAROS:  Q8NE35 GTEx:  ENSG00000107864

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	3

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-05-08 
Deposition Author(s): Flores, M.D., Sawaya, M.R., Boyer, D.R., Zink, S., Fioriti, L., Rodriguez, J.A.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM128867
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM1295410
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM007185
National Science Foundation (NSF, United States)	United States	DMR-1548924
The Pew Charitable Trusts	United States	JAR
David and Lucile Packard Foundation	United States	JAR

Revision History  

• Version 1.0: 2024-05-08
  Type: Initial release
  
• Version 1.1: 2025-05-21
  Changes: Data collection, Structure summary