9DVI | pdb_00009dvi

Hetero-hexameric Hsp70-Hsp40-DafA complex

• PDB DOI: https://doi.org/10.2210/pdb9DVI/pdb
• EM Map EMD-47203: EMDB EMDataResource

• Classification: CHAPERONE
• Organism(s): Thermus thermophilus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-10-08 Released: 2025-10-22 
• Deposition Author(s): Ibrahim, Z., Kalodimos, C.
• Funding Organization(s): Other government, Other private

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.37 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

hetero-hexameric Hsp70-Hsp40-DafA complex

Ibrahim, Z., Kalodimos, C.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 6-mer - A2B2C2 

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

Macromolecule Content 

• Total Structure Weight: 216.8 kDa 
• Atom Count: 8,978 
• Modeled Residue Count: 1,153 
• Deposited Residue Count: 1,974 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chaperone protein DnaJ 2	A, C	280	Thermus thermophilus	Mutation(s): 0  Gene Names: dnaJ2, TthHB5018_15880
UniProt
Find proteins for Q72IK7 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27)) Explore Q72IK7  Go to UniProtKB:  Q72IK7

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Chaperone protein DnaK	B, D	615	Thermus thermophilus	Mutation(s): 0  Gene Names: dnaK, TthHB5018_15900
UniProt
Find proteins for Q72IK5 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27)) Explore Q72IK5  Go to UniProtKB:  Q72IK5

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein DafA	E [auth S], F [auth T]	92	Thermus thermophilus	Mutation(s): 0  Gene Names: dafA, TthAA11_16070, TthHB5018_15870
UniProt
Find proteins for Q72IK8 (Thermus thermophilus (strain ATCC BAA-163 / DSM 7039 / HB27)) Explore Q72IK8  Go to UniProtKB:  Q72IK8

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.37 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21_5207:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-10-22 
Deposition Author(s): Ibrahim, Z., Kalodimos, C.

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Funding Organization	Location	Grant Number
Other government	United States	NIH grant R35 GM12246
Other private	United States	ALSAC

Revision History  

• Version 1.0: 2025-10-22
  Type: Initial release