1QW9

Crystal structure of a family 51 alpha-L-arabinofuranosidase in complex with 4-nitrophenyl-Ara

• PDB DOI: https://doi.org/10.2210/pdb1QW9/pdb

• Classification: HYDROLASE
• Organism(s): Geobacillus stearothermophilus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2003-09-01 Released: 2003-10-07 
• Deposition Author(s): Hoevel, K., Shallom, D., Niefind, K., Belakhov, V., Shoham, G., Bassov, T., Shoham, Y., Schomburg, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 0.179 
• R-Value Work: 0.160 
• R-Value Observed: 0.173 

Biological Assembly 1  

Global Symmetry: Dihedral - D3  (Explore in 3D)
Global Stoichiometry: Homo 6-mer - A6 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 115 kDa 
• Atom Count: 9,598 
• Modelled Residue Count: 994 
• Deposited Residue Count: 1,004 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-L-arabinofuranosidase	A, B	502	Geobacillus stearothermophilus	Mutation(s): 1  Gene Names: ABFA EC: 3.2.1.55
UniProt
Find proteins for Q9XBQ3 (Geobacillus stearothermophilus) Explore Q9XBQ3  Go to UniProtKB:  Q9XBQ3

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
KHP	C [auth A], D [auth B]	4-nitrophenyl alpha-L-arabinofuranoside C11 H13 N O7 DUYYBTBDYZXISX-UKKRHICBSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.20 Å
• R-Value Free: 0.179 
• R-Value Work: 0.160 
• R-Value Observed: 0.173 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 179.311	α = 90
b = 179.311	β = 90
c = 100.397	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-10-07 
Deposition Author(s): Hoevel, K., Shallom, D., Niefind, K., Belakhov, V., Shoham, G., Bassov, T., Shoham, Y., Schomburg, D.

Revision History  

• Version 1.0: 2003-10-07
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2021-10-27
  Changes: Database references, Structure summary
• Version 2.2: 2024-02-14
  Changes: Data collection