9L51 | pdb_00009l51

The structure of the ring expansion oxygenase SpoC

• PDB DOI: https://doi.org/10.2210/pdb9L51/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Sporormiella sp.
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-12-21 Released: 2025-12-24 
• Deposition Author(s): Liu, M., He, X.
• Funding Organization(s): National Basic Research Program of China (973 Program)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.250 (Depositor), 0.251 (DCC) 
• R-Value Work: 
  0.207 (Depositor), 0.209 (DCC) 
• R-Value Observed: 
  0.210 (Depositor) 

Literature

The structure of the ring expansion oxygenase SpoC

Liu, M., He, X.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 83.05 kDa 
• Atom Count: 5,404 
• Modeled Residue Count: 615 
• Deposited Residue Count: 748 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ring expansion oxygenase SpoC	A, B	374	Sporormiella sp.	Mutation(s): 0
UniProt
Find proteins for A0A6G1IFE0 (Lentithecium fluviatile CBS 122367) Explore A0A6G1IFE0  Go to UniProtKB:  A0A6G1IFE0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FE (Subject of Investigation/LOI)	C [auth A], E [auth B]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N
CL	D [auth A], F [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.250 (Depositor), 0.251 (DCC) 
• R-Value Work:  0.207 (Depositor), 0.209 (DCC) 
• R-Value Observed: 0.210 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 81.443	α = 90
b = 84.993	β = 90
c = 104.631	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-12-24 
Deposition Author(s): Liu, M., He, X.

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Funding Organization	Location	Grant Number
National Basic Research Program of China (973 Program)	China	2020YFA0803201

Revision History  

• Version 1.0: 2025-12-24
  Type: Initial release