8X2W

Crystal structure of the ancestral GH19 chitinase, Anc4+LoopII (P12K/N13H/S58T/N193G/Y194F/D197R)

• PDB DOI: https://doi.org/10.2210/pdb8X2W/pdb

• Classification: HYDROLASE
• Organism(s): synthetic construct
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-11-10 Released: 2024-04-03 
• Deposition Author(s): Kozome, D., Laurino, P.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.204 
• R-Value Work: 0.186 
• R-Value Observed: 0.187 

Literature

Beyond the active site: The addition of a remote loop reveals a new complex biological function for chitinase enzymes

Kozome, D., Laurino, P.

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: 25.44 kDa 
• Atom Count: 1,917 
• Modelled Residue Count: 232 
• Deposited Residue Count: 232 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
the ancestral GH19 chitinase, Anc4+LoopII (P12K/N13H/S58T/N193G/Y194F/D197R)	A	232	synthetic construct	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.204 
• R-Value Work: 0.186 
• R-Value Observed: 0.187 
• Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.32	α = 90
b = 69.59	β = 90
c = 70.22	γ = 90

Software Package:

Software Name	Purpose
PHASER	phasing
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-04-03 
Deposition Author(s): Kozome, D., Laurino, P.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2024-04-03
  Type: Initial release