3UNL

Crystal structure of ketosteroid isomerase F54G from Pseudomonas testosteroni

• PDB DOI: https://doi.org/10.2210/pdb3UNL/pdb

• Classification: ISOMERASE
• Organism(s): Comamonas testosteroni
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2011-11-15 Released: 2012-11-21 
• Deposition Author(s): Gonzalez, A., Tsai, Y., Schwans, J., Sunden, F., Herschlag, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.52 Å
• R-Value Free: 0.268 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 

Literature

Crystal structure of ketosteroid isomerase F54G from Pseudomonas testosteroni

Schwans, J., Sunden, F., Gonzalez, A., Tsai, Y., Herschlag, D.

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 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 54.63 kDa 
• Atom Count: 3,961 
• Modelled Residue Count: 496 
• Deposited Residue Count: 500 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Steroid Delta-isomerase	A, B, C, D	125	Comamonas testosteroni	Mutation(s): 1  Gene Names: ksi EC: 5.3.3.1
UniProt
Find proteins for P00947 (Comamonas testosteroni) Explore P00947  Go to UniProtKB:  P00947

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth A], F [auth A], G [auth A], H [auth A], I [auth B], J [auth B], K [auth B], L [auth C], M [auth C], N [auth C], O [auth D], P [auth D], Q [auth D], R [auth D]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.52 Å
• R-Value Free: 0.268 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.571	α = 90
b = 64.571	β = 90
c = 502.154	γ = 120

Software Package:

Software Name	Purpose
XSCALE	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
Web-Ice	data collection
XDS	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2012-11-21 
Deposition Author(s): Gonzalez, A., Tsai, Y., Schwans, J., Sunden, F., Herschlag, D.

Revision History  

• Version 1.0: 2012-11-21
  Type: Initial release
  
• Version 1.1: 2017-11-08
  Changes: Refinement description
• Version 1.2: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description