3MSO

Crystal structure of a STEROID DELTA-ISOMERASE (NP_250810.1) from PSEUDOMONAS AERUGINOSA at 2.57 A resolution

• PDB DOI: https://doi.org/10.2210/pdb3MSO/pdb

• Classification: ISOMERASE
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-04-29 Released: 2010-06-09 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.57 Å
• R-Value Free: 0.241 
• R-Value Work: 0.193 
• R-Value Observed: 0.195 

Literature

Crystal structure of a STEROID DELTA-ISOMERASE (PA2120) from PSEUDOMONAS AERUGINOSA at 2.57 A resolution

Joint Center for Structural Genomics (JCSG)

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 32 kDa 
• Atom Count: 2,063 
• Modelled Residue Count: 271 
• Deposited Residue Count: 286 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
STEROID DELTA-ISOMERASE	A, B	143	Pseudomonas aeruginosa	Mutation(s): 0  Gene Names: PA2120
UniProt
Find proteins for Q9I1Z5 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9I1Z5  Go to UniProtKB:  Q9I1Z5

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.57 Å
• R-Value Free: 0.241 
• R-Value Work: 0.193 
• R-Value Observed: 0.195 
• Space Group: C 2 2 2₁
• Diffraction Data: https://doi.org/10.18430/M33MSO

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 34.699	α = 90
b = 119.042	β = 90
c = 128.411	γ = 90

Software Package:

Software Name	Purpose
MolProbity	model building
PHENIX	refinement
SHELX	phasing
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing
BUSTER	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-06-09 
Deposition Author(s): Joint Center for Structural Genomics (JCSG)

Revision History  

• Version 1.0: 2010-06-09
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-08
  Changes: Refinement description
• Version 1.3: 2023-02-01
  Changes: Database references, Derived calculations