1A0C

XYLOSE ISOMERASE FROM THERMOANAEROBACTERIUM THERMOSULFURIGENES

• PDB DOI: https://doi.org/10.2210/pdb1A0C/pdb

• Classification: KETOLISOMERASE
• Organism(s): Thermoanaerobacterium thermosulfurigenes
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1997-11-28 Released: 1998-06-03 
• Deposition Author(s): Gallay, O., Chopra, R., Conti, E., Brick, P., Blow, D.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.177 
• R-Value Work: 0.168 
• R-Value Observed: 0.168 

Starting Model: experimental

Literature

Crystal Structures of Class II Xylose Isomerases from Two Thermophiles and a Hyperthermophile

Gallay, O., Chopra, R., Conti, E., Brick, P., Jackson, R., Hartley, B., Vieille, C., Zeikus, J.G., Blow, D.

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: 202.11 kDa 
• Atom Count: 15,116 
• Modelled Residue Count: 1,748 
• Deposited Residue Count: 1,752 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
XYLOSE ISOMERASE	A, B, C, D	438	Thermoanaerobacterium thermosulfurigenes	Mutation(s): 0  Gene Names: XYLA EC: 5.3.1.5
UniProt
Find proteins for P19148 (Thermoanaerobacterium thermosulfurigenes) Go to UniProtKB:  P19148

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CO	E [auth A], F [auth A], G [auth B], H [auth B], I [auth C], J [auth C], K [auth D], L [auth D]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.177 
• R-Value Work: 0.168 
• R-Value Observed: 0.168 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.66	α = 90
b = 153.73	β = 90
c = 158.47	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
IPMOSFLM	data reduction
CCP4	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-06-03 
Deposition Author(s): Gallay, O., Chopra, R., Conti, E., Brick, P., Blow, D.

Revision History  

• Version 1.0: 1998-06-03
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-02
  Changes: Database references, Derived calculations, Other, Refinement description
• Version 1.4: 2024-05-22
  Changes: Data collection