3QOK | pdb_00003qok

Crystal structure of putative chitinase II from Klebsiella pneumoniae

• PDB DOI: https://doi.org/10.2210/pdb3QOK/pdb

• Classification: HYDROLASE
• Organism(s): Klebsiella pneumoniae subsp. pneumoniae MGH 78578
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2011-02-10 Released: 2011-03-23 
• Deposition Author(s): Michalska, K., Li, H., Bearden, J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 
  0.212 (Depositor), 0.210 (DCC) 
• R-Value Work: 
  0.179 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.181 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of putative chitinase II from Klebsiella pneumoniae

Michalska, K., Li, H., Bearden, J., Joachimiak, A.

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 46.52 kDa 
• Atom Count: 3,102 
• Modeled Residue Count: 394 
• Deposited Residue Count: 420 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative chitinase II	A	420	Klebsiella pneumoniae subsp. pneumoniae MGH 78578	Mutation(s): 0  Gene Names: KPN78578_11730, KPN_01201 EC: 3.2.1.14
UniProt
Find proteins for A6T7R3 (Klebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578)) Explore A6T7R3  Go to UniProtKB:  A6T7R3

Small Molecules

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

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free:  0.212 (Depositor), 0.210 (DCC) 
• R-Value Work:  0.179 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.181 (Depositor) 

Diffraction Data: https://doi.org/10.18430/M33QOK

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 92.341	α = 90
b = 110.672	β = 90
c = 108.481	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Auto-Rickshaw	phasing
CNS	refinement
SBC-Collect	data collection
PHASER	phasing
MLPHARE	phasing
pirate	phasing
SHELXE	model building
RESOLVE	model building
BUCCANEER	model building
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
CNS	phasing
REFMAC	phasing
RESOLVE	phasing
BUCCANEER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-03-23 
Deposition Author(s): Michalska, K., Li, H., Bearden, J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2011-03-23
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2019-07-17
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.3: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2023-12-06
  Changes: Data collection
• Version 1.5: 2024-11-06
  Changes: Structure summary