2C20 | pdb_00002c20

CRYSTAL STRUCTURE OF UDP-GLUCOSE 4-EPIMERASE

• PDB DOI: https://doi.org/10.2210/pdb2C20/pdb

• Classification: ISOMERASE
• Organism(s): Bacillus anthracis str. Ames
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-09-22 Released: 2007-02-20 
• Deposition Author(s): Lebedev, A.A., Moroz, O.V., Blagova, E.V., Levdikov, V.M., Fogg, M.J., Brannigan, J.A., Wilkinson, A.J., Wilson, K.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 
  0.276 (Depositor) 
• R-Value Work: 
  0.205 (Depositor) 
• R-Value Observed: 
  0.208 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of Udp-Glucose 4-Epimerase from Bacillus Anthracis at 2.7A Resolution

Lebedev, A.A., Moroz, O.V., Blagova, E.V., Levdikov, V.M., Fogg, M.J., Brannigan, J.A., Wilkinson, A.J., Wilson, K.S.

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 PQS (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 PQS (software)

Biological Assembly 3  

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

Biological assembly 3 assigned by authors and generated by PQS (software)

Macromolecule Content 

• Total Structure Weight: 226.11 kDa 
• Atom Count: 16,074 
• Modeled Residue Count: 1,974 
• Deposited Residue Count: 1,980 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UDP-GLUCOSE 4-EPIMERASE	A, B, C, D, E, F	330	Bacillus anthracis str. Ames	Mutation(s): 0  EC: 5.1.3.2
UniProt
Find proteins for A0A6L8PTV5 (Bacillus anthracis) Explore A0A6L8PTV5  Go to UniProtKB:  A0A6L8PTV5

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAD	G [auth A], I [auth B], K [auth C], M [auth D], O [auth E], Q [auth F]	NICOTINAMIDE-ADENINE-DINUCLEOTIDE C21 H27 N7 O14 P2 BAWFJGJZGIEFAR-NNYOXOHSSA-N
ZN	H [auth A], J [auth B], L [auth C], N [auth D], P [auth E], R [auth F]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free:  0.276 (Depositor) 
• R-Value Work:  0.205 (Depositor) 
• R-Value Observed: 0.208 (Depositor) 

Space Group: P 3₂ 1 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 136.165	α = 90
b = 136.165	β = 90
c = 248.646	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-02-20 
Deposition Author(s): Lebedev, A.A., Moroz, O.V., Blagova, E.V., Levdikov, V.M., Fogg, M.J., Brannigan, J.A., Wilkinson, A.J., Wilson, K.S.

Revision History  

• Version 1.0: 2007-02-20
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-12-13
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description
• Version 1.4: 2025-10-01
  Changes: Advisory, Derived calculations, Structure summary