9ZDK | pdb_00009zdk

The cryo-EM structure of Pakpunavirus P7-1 triplex protein and sheath in contracted state

• PDB DOI: https://doi.org/10.2210/pdb9ZDK/pdb
• EM Map EMD-74065: EMDB EMDataResource

• Classification: VIRAL PROTEIN
• Organism(s): Pakpunavirus
• Mutation(s): No 


• Deposited: 2025-11-25 Released: 2026-04-15 
• Deposition Author(s): Li, F., Cingolani, G.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 5.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

The Cryo-EM structure of Pakpunavirus P7-1

Li, F., Cingolani, G.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C6  (Explore in 3D)
Global Stoichiometry: Hetero 24-mer - A12B6C6 Pseudo Symmetry: Cyclic - C6  (Explore in 3D)
Pseudo Stoichiometry: Hetero 24-mer - A6B6C6D6 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 1,067.5 kDa 
• Atom Count: 74,784 
• Modeled Residue Count: 9,810 
• Deposited Residue Count: 9,870 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
gp88	A, B, D, E, G, H, J, K, M, N, P, Q	487	Pakpunavirus	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
gp89	C, F, I, L, O, R	243	Pakpunavirus	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
gp76	S, T, U, V, W, X	428	Pakpunavirus	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 5.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	2.0_5936
RECONSTRUCTION	RELION

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-04-15 
Deposition Author(s): Li, F., Cingolani, G.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM140733

Revision History  

• Version 1.0: 2026-04-15
  Type: Initial release