9L2I | pdb_00009l2i

Cryo-EM structure of soluble methane monooxygenase hydroxylase from Methylosinus sporium 5

• PDB DOI: https://doi.org/10.2210/pdb9L2I/pdb
• EM Map EMD-62776: EMDB EMDataResource

• Classification: OXIDOREDUCTASE
• Organism(s): Methylosinus sporium
• Mutation(s): No 


• Deposited: 2024-12-17 Released: 2025-12-17 
• Deposition Author(s): Hwang, Y., Pozharski, E., Lee, S.J.
• Funding Organization(s): National Research Foundation (NRF, Korea), Ministry of Education (MoE, Korea)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.42 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Complex formation via regulatory component of MMOH from Methylosinus sporium 5

Hwang, Y., Pozharski, E., Lee, S.J.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 6-mer - A2B2C2 Pseudo Symmetry: Cyclic - C2  (Explore in 3D)
Pseudo Stoichiometry: Hetero 6-mer - A4B2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 249.42 kDa 
• Atom Count: 17,092 
• Modeled Residue Count: 2,108 
• Deposited Residue Count: 2,180 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methane monooxygenase	A, D	526	Methylosinus sporium	Mutation(s): 0
UniProt
Find proteins for Q27RN7 (Methylosinus sporium) Explore Q27RN7  Go to UniProtKB:  Q27RN7

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Methane monooxygenase	B, E	395	Methylosinus sporium	Mutation(s): 0
UniProt
Find proteins for Q27RN6 (Methylosinus sporium) Explore Q27RN6  Go to UniProtKB:  Q27RN6

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Methane monooxygenase	C, F	169	Methylosinus sporium	Mutation(s): 0
UniProt
Find proteins for Q27RN4 (Methylosinus sporium) Explore Q27RN4  Go to UniProtKB:  Q27RN4

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FE (Subject of Investigation/LOI)	G [auth A], H [auth A], I [auth D], J [auth D]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.42 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.19.2-4158
RECONSTRUCTION	cryoSPARC	3.3.2

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-12-17 
Deposition Author(s): Hwang, Y., Pozharski, E., Lee, S.J.

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Funding Organization	Location	Grant Number
National Research Foundation (NRF, Korea)	Korea, Republic Of	2023RIS-008
Ministry of Education (MoE, Korea)	Korea, Republic Of	2017R1A6A1A03015876

Revision History  

• Version 1.0: 2025-12-17
  Type: Initial release