9IQO | pdb_00009iqo

Cryo-EM structure of the Rubisco from thermophilic purple bacterial Rubisco

• PDB DOI: https://doi.org/10.2210/pdb9IQO/pdb
• EM Map EMD-60792: EMDB EMDataResource

• Classification: PLANT PROTEIN
• Organism(s): Thermochromatium tepidum ATCC 43061
• Mutation(s): No 


• Deposited: 2024-07-13 Released: 2025-03-05 
• Deposition Author(s): Chang, S.H., Chen, J.H.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 1.55 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of a purple bacterial Rubisco at 1.55 Angstroms resolution

Chang, S.H., Chen, J.H.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D4  (Explore in 3D)
Global Stoichiometry: Hetero 16-mer - A8B8 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 512.85 kDa 
• Atom Count: 36,096 
• Modeled Residue Count: 4,552 
• Deposited Residue Count: 4,552 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ribulose bisphosphate carboxylase large chain	A, C, D, E [auth B], F [auth H], G [auth E], H [auth F], I [auth G]	456	Thermochromatium tepidum ATCC 43061	Mutation(s): 0  EC: 4.1.1.39
UniProt
Find proteins for A0A6I6DX30 (Thermochromatium tepidum ATCC 43061) Explore A0A6I6DX30  Go to UniProtKB:  A0A6I6DX30

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Ribulose bisphosphate carboxylase small subunit	B [auth a], J [auth c], K [auth d], L [auth b], M [auth h], N [auth e], O [auth f], P [auth g]	113	Thermochromatium tepidum ATCC 43061	Mutation(s): 0
UniProt
Find proteins for A0A6I6DZD2 (Thermochromatium tepidum ATCC 43061) Explore A0A6I6DZD2  Go to UniProtKB:  A0A6I6DZD2

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 1.55 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-05 
Deposition Author(s): Chang, S.H., Chen, J.H.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2025-03-05
  Type: Initial release
  
• Version 1.1: 2025-07-23
  Changes: Data collection