1X6L | pdb_00001x6l

Crystal structure of S. marcescens chitinase A mutant W167A

• PDB DOI: https://doi.org/10.2210/pdb1X6L/pdb

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


• Deposited: 2004-08-11 Released: 2005-07-26 
• Deposition Author(s): Aronson Jr., N.N., Halloran, B.A., Alexyev, M.F., Zhou, X.E., Wang, Y., Meehan, E.J., Chen, L.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.233 (Depositor) 
• R-Value Work: 
  0.217 (Depositor), 0.230 (DCC) 
• R-Value Observed: 
  0.217 (Depositor) 

Starting Model: experimental

Literature

Mutation of Trp167 at the -3 subsite of the chitin-binding cleft of S. marcescens chitinase A caused enhanced transglycosylation

Aronson Jr., N.N., Halloran, B.A., Alexyev, M.F., Zhou, X.E., Wang, Y., Meehan, E.J., Chen, L.

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: 60.97 kDa 
• Atom Count: 4,502 
• Modeled Residue Count: 539 
• Deposited Residue Count: 563 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chitinase A	A	563	Serratia marcescens	Mutation(s): 1  Gene Names: chiA EC: 3.2.1.14
UniProt
Find proteins for P07254 (Serratia marcescens) Explore P07254  Go to UniProtKB:  P07254

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.233 (Depositor) 
• R-Value Work:  0.217 (Depositor), 0.230 (DCC) 
• R-Value Observed: 0.217 (Depositor) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 76.509	α = 90
b = 132.706	β = 90
c = 192.631	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-07-26 
Deposition Author(s): Aronson Jr., N.N., Halloran, B.A., Alexyev, M.F., Zhou, X.E., Wang, Y., Meehan, E.J., Chen, L.

Revision History  

• Version 1.0: 2005-07-26
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-20
  Changes: Advisory, Database references
• Version 1.4: 2023-08-23
  Changes: Data collection, Refinement description
• Version 1.5: 2023-11-29
  Changes: Database references
• Version 1.6: 2024-10-30
  Changes: Structure summary