1ITX

Catalytic Domain of Chitinase A1 from Bacillus circulans WL-12

• PDB DOI: https://doi.org/10.2210/pdb1ITX/pdb

• Classification: HYDROLASE
• Organism(s): Niallia circulans
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2002-02-13 Released: 2002-03-13 
• Deposition Author(s): Iwahori, F., Matsumoto, T., Watanabe, T., Nonaka, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.10 Å
• R-Value Free: 0.137 
• R-Value Work: 0.116 
• R-Value Observed: 0.117 

Literature

Three-dimensional structure of the catalytic domain of chitinase A1 from Bacillus circulans WL-12 at a very high resolution

Matsumoto, T., Nonaka, T., Hashimoto, M., Watanabe, T., Mitsui, Y.

(1999) Proc Jpn Acad Ser B Phys Biol Sci 75: 269-274

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 46.54 kDa 
• Atom Count: 4,354 
• Modelled Residue Count: 419 
• Deposited Residue Count: 419 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glycosyl Hydrolase	A	419	Niallia circulans	Mutation(s): 0  Gene Names: CHIA1 EC: 3.2.1.14
UniProt
Find proteins for P20533 (Niallia circulans) Explore P20533  Go to UniProtKB:  P20533

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], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.10 Å
• R-Value Free: 0.137 
• R-Value Work: 0.116 
• R-Value Observed: 0.117 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.0073	α = 109.2931
b = 46.8388	β = 95.4547
c = 55.7001	γ = 116.6796

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
ARP/wARP	model building
REFMAC	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-03-13 
Deposition Author(s): Iwahori, F., Matsumoto, T., Watanabe, T., Nonaka, T.

Revision History  

• Version 1.0: 2002-03-13
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2023-10-25
  Changes: Data collection, Database references, Derived calculations, Refinement description