1R86

Crystal structure of the extracellular xylanase from Geobacillus stearothermophilus T-6 (XT6, monoclinic form): The E159A/E265A mutant at 1.8A resolution

• PDB DOI: https://doi.org/10.2210/pdb1R86/pdb

• Classification: HYDROLASE
• Organism(s): Geobacillus stearothermophilus
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2003-10-23 Released: 2005-07-19 
• Deposition Author(s): Bar, M., Golan, G., Zolotnitsky, G., Shoham, Y., Shoham, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.215 
• R-Value Work: 0.181 
• R-Value Observed: 0.181 

Literature

Crystal structure of the extracellular xylanase from Geobacillus stearothermophilus T-6 (XT6, monoclinic form): The E159A/E265A mutant at 1.8A resolution

Bar, M., Golan, G., Zolotnitsky, G., Shoham, Y., Shoham, G.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 44.38 kDa 
• Atom Count: 3,484 
• Modelled Residue Count: 371 
• Deposited Residue Count: 379 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Endo-1,4-beta-xylanase	A	379	Geobacillus stearothermophilus	Mutation(s): 2  Gene Names: xynA EC: 3.2.1.8
UniProt
Find proteins for P40943 (Geobacillus stearothermophilus) Explore P40943  Go to UniProtKB:  P40943

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	K [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ZN	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	I [auth A], J [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.215 
• R-Value Work: 0.181 
• R-Value Observed: 0.181 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 121.244	α = 90
b = 61.251	β = 119.28
c = 89.463	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-07-19 
Deposition Author(s): Bar, M., Golan, G., Zolotnitsky, G., Shoham, Y., Shoham, G.

Revision History  

• Version 1.0: 2005-07-19
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2014-04-30
  Changes: Data collection
• Version 1.4: 2021-10-27
  Changes: Database references, Derived calculations
• Version 1.5: 2023-08-23
  Changes: Data collection, Refinement description