2WK2

Chitinase A from Serratia marcescens ATCC990 in complex with Chitotrio-thiazoline dithioamide.

• PDB DOI: https://doi.org/10.2210/pdb2WK2/pdb

• Classification: HYDROLASE
• Organism(s): Serratia marcescens
• Mutation(s): No 


• Deposited: 2009-06-04 Released: 2010-03-16 
• Deposition Author(s): Taylor, E.J., Dennis, R.J., Macdonald, J.M., Tarling, C.A., Knapp, S., Withers, S.G., Davies, G.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.215 
• R-Value Work: 0.165 
• R-Value Observed: 0.168 

Starting Model: experimental

Literature

Chitinase Inhibition by Chitobiose and Chitotriose Thiazolines.

Macdonald, J.M., Tarling, C.A., Taylor, E.J., Dennis, R.J., Myers, D.S., Knapp, S., Davies, G.J., Withers, S.G.

(2010) Angew Chem Int Ed Engl 49: 2599

• PubMed: 20209544 
• DOI: https://doi.org/10.1002/anie.200906644
• Primary Citation of Related Structures:  
  2WK2, 2WLY, 2WLZ, 2WM0

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Organizational Affiliation: 

Department of Chemistry, University of British Columbia, Vancouver, V6T1Z3 Canada.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 60.14 kDa 
• Atom Count: 4,753 
• Modelled Residue Count: 539 
• Deposited Residue Count: 540 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CHITINASE A	A	540	Serratia marcescens	Mutation(s): 0  EC: 3.2.1.14
UniProt
Find proteins for P07254 (Serratia marcescens) Explore P07254  Go to UniProtKB:  P07254

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-deoxy-2-(ethanethioylamino)-beta-D-glucopyranose-(1-4)-2-deoxy-2-(ethanethioylamino)-beta-D-glucopyranose	B, C	2	N/A	N/A
Glycosylation Resources
GlyTouCan:  G32359JL GlyCosmos:  G32359JL

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NGT	D [auth A]	3AR,5R,6S,7R,7AR-5-HYDROXYMETHYL-2-METHYL-5,6,7,7A-TETRAHYDRO-3AH-PYRANO[3,2-D]THIAZOLE-6,7-DIOL C8 H13 N O4 S DRHXTSWSUAJOJZ-FMDGEEDCSA-N
PEG	E [auth A], F [auth A], G [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.05 Å
• R-Value Free: 0.215 
• R-Value Work: 0.165 
• R-Value Observed: 0.168 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 131.214	α = 90
b = 200.97	β = 90
c = 59.437	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-03-16 
Deposition Author(s): Taylor, E.J., Dennis, R.J., Macdonald, J.M., Tarling, C.A., Knapp, S., Withers, S.G., Davies, G.J.

Revision History  

• Version 1.0: 2010-03-16
  Type: Initial release
  
• Version 1.1: 2011-10-12
  Changes: Database references, Derived calculations, Non-polymer description, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary
• Version 2.1: 2023-12-13
  Changes: Data collection, Database references, Refinement description, Structure summary
• Version 2.2: 2024-10-16
  Changes: Structure summary