3KE7 | pdb_00003ke7

Crystal structure of putative ketosteroid isomerase (YP_001303366.1) from Parabacteroides distasonis ATCC 8503 at 1.45 A resolution

• PDB DOI: https://doi.org/10.2210/pdb3KE7/pdb

• Classification: ISOMERASE
• Organism(s): Parabacteroides distasonis ATCC 8503
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-10-24 Released: 2009-11-03 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 
  0.182 (Depositor), 0.180 (DCC) 
• R-Value Work: 
  0.152 (Depositor), 0.160 (DCC) 
• R-Value Observed: 
  0.153 (Depositor) 

Literature

Crystal structure of putative ketosteroid isomerase (YP_001303366.1) from Parabacteroides distasonis ATCC 8503 at 1.45 A resolution

Joint Center for Structural Genomics (JCSG)

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: 32.37 kDa 
• Atom Count: 2,584 
• Modelled Residue Count: 265 
• Deposited Residue Count: 268 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative ketosteroid isomerase	A, B	134	Parabacteroides distasonis ATCC 8503	Mutation(s): 0  Gene Names: BDI_2009
UniProt
Find proteins for A6LDI0 (Parabacteroides distasonis (strain ATCC 8503 / DSM 20701 / CIP 104284 / JCM 5825 / NCTC 11152)) Explore A6LDI0  Go to UniProtKB:  A6LDI0

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BCN	C [auth A], F [auth B]	BICINE C6 H13 N O4 FSVCELGFZIQNCK-UHFFFAOYSA-N
PEG	E [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
SO4	G [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

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: 1.45 Å
• R-Value Free:  0.182 (Depositor), 0.180 (DCC) 
• R-Value Work:  0.152 (Depositor), 0.160 (DCC) 
• R-Value Observed: 0.153 (Depositor) 

Diffraction Data: https://doi.org/10.18430/M33KE7

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.66	α = 90
b = 60.897	β = 102.3
c = 52.28	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SOLVE	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-11-03 
Deposition Author(s): Joint Center for Structural Genomics (JCSG)

Revision History  

• Version 1.0: 2009-11-03
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2017-10-25
  Changes: Author supporting evidence, Refinement description
• Version 1.3: 2019-07-17
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.4: 2023-02-01
  Changes: Database references, Derived calculations
• Version 1.5: 2024-11-20
  Changes: Data collection, Structure summary