9J4D | pdb_00009j4d

Cryo-EM structure of P25alpha core fibril

• PDB DOI: https://doi.org/10.2210/pdb9J4D/pdb
• EM Map EMD-61132: EMDB EMDataResource

• Classification: CYTOSOLIC PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-08-09 Released: 2025-08-13 
• Deposition Author(s): Xia, W.C., Sun, Y.P., Huang, C.A., Liu, C.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.93 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

Cryo-EM structure of P25alpha core fibril

Xia, W.C., Sun, Y.P., Huang, C.A., Liu, C.

To be published.

Biological Assembly 1  

Global Symmetry: Helical - H  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 87.58 kDa 
• Atom Count: 1,668 
• Modeled Residue Count: 210 
• Deposited Residue Count: 786 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Tubulin polymerization-promoting protein	A [auth F], B [auth C], C [auth D], D [auth E], E [auth A], F [auth B]	131	Homo sapiens	Mutation(s): 0  Gene Names: TPPP, TPPP1 EC: 3.6.5
UniProt & NIH Common Fund Data Resources
Find proteins for O94811 (Homo sapiens) Explore O94811  Go to UniProtKB:  O94811
PHAROS:  O94811 GTEx:  ENSG00000171368

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.93 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-08-13 
Deposition Author(s): Xia, W.C., Sun, Y.P., Huang, C.A., Liu, C.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2025-08-13
  Type: Initial release