9K8B | pdb_00009k8b

Cryo-EM structure of monomer of designed zinc-induced tetrahedron Cage-t32-Zn1-HEHE-34

• PDB DOI: https://doi.org/10.2210/pdb9K8B/pdb
• EM Map EMD-62167: EMDB EMDataResource

• Classification: METAL BINDING PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-10-24 Released: 2025-10-29 
• Deposition Author(s): Qu, Y.N., Cao, L.X.
• Funding Organization(s): Ministry of Science and Technology (MoST, China)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.06 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

De novo design of metal ion regulated protein assemblies

Qu, Y.N., Cao, L.X.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 27.86 kDa 
• Atom Count: 1,765 
• Modeled Residue Count: 219 
• Deposited Residue Count: 243 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cage-t32-Zn1-HEHE-34	A	243	Escherichia coli	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN (Subject of Investigation/LOI)	B [auth A], C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.06 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-10-29 
Deposition Author(s): Qu, Y.N., Cao, L.X.

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Funding Organization	Location	Grant Number
Ministry of Science and Technology (MoST, China)	China	--

Revision History  

• Version 1.0: 2025-10-29
  Type: Initial release