1KFW

Structure of catalytic domain of psychrophilic chitinase B from Arthrobacter TAD20

• PDB DOI: https://doi.org/10.2210/pdb1KFW/pdb

• Classification: HYDROLASE
• Organism(s): Arthrobacter sp. TAD20
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-11-23 Released: 2002-11-23 
• Deposition Author(s): Ayati, M., Mandelman, D., Aghajari, N., Haser, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.74 Å
• R-Value Free: 0.189 
• R-Value Work: 0.174 
• R-Value Observed: 0.174 

Literature

Structure of catalytical domain of psychrophilic chitinase from Arthobacter, with and without allosamidine

Ayati, M., Mandelman, D., Aghajari, N., Haser, R.

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: 46.95 kDa 
• Atom Count: 3,857 
• Modelled Residue Count: 435 
• Deposited Residue Count: 435 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
chitinase B	A	435	Arthrobacter sp. TAD20	Mutation(s): 0  EC: 3.2.1.14
UniProt
Find proteins for Q9REI6 (Arthrobacter sp) Explore Q9REI6  Go to UniProtKB:  Q9REI6

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.74 Å
• R-Value Free: 0.189 
• R-Value Work: 0.174 
• R-Value Observed: 0.174 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 114.28	α = 90
b = 114.28	β = 90
c = 102.78	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-11-23 
Deposition Author(s): Ayati, M., Mandelman, D., Aghajari, N., Haser, R.

Revision History  

• Version 1.0: 2002-11-23
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.3: 2024-11-20
  Changes: Data collection, Database references, Derived calculations, Structure summary