Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Homo 6-mer - A6 

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

Macromolecule Content

• Total Structure Weight: 329.32 kDa 
• Atom Count: 23156 
• Modelled Residue Count: 2837 
• Deposited Residue Count: 2964 
• Unique protein chains: 1

4V1X

The structure of the hexameric atrazine chlorohydrolase, AtzA

• PDB DOI: 10.2210/pdb4V1X/pdb

• Classification: HYDROLASE
• Organism(s): Pseudomonas sp. ADP
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2014-10-04 Released: 2015-03-11 
• Deposition Author(s): Peat, T.S., Newman, J., Balotra, S., Lucent, D., Warden, A.C., Scott, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.196 
• R-Value Work: 0.166 
• R-Value Observed: 0.167 

Literature

The Structure of the Hexameric Atrazine Chlorohydrolase Atza.

Peat, T.S., Newman, J., Balotra, S., Lucent, D., Warden, A.C., Scott, C.

(2015) Acta Crystallogr D Biol Crystallogr 71: 710

• PubMed: 25760618 
• DOI: 10.1107/S1399004715000619
• Primary Citation of Related Structures:  
  4V1X, 4V1Y


• PubMed Abstract: 
  

Atrazine chlorohydrolase (AtzA) was discovered and purified in the early 1990s from soil that had been exposed to the widely used herbicide atrazine. It was subsequently found that this enzyme catalyzes the first and necessary step in the breakdown of atrazine by the soil organism Pseudomonas sp. strain ADP. Although it has taken 20 years, a crystal structure of the full hexameric form of AtzA has now been obtained. AtzA is less well adapted to its physiological role (i.e. atrazine dechlorination) than the alternative metal-dependent atrazine chlorohydrolase (TrzN), with a substrate-binding pocket that is under considerable strain and for which the substrate is a poor fit.

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Organizational Affiliation: 

CSIRO Biomedical Manufacturing, Parkville, Australia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ATRAZINE CHLOROHYDROLASE	A, B, C, D, E, F	494	Pseudomonas sp. ADP	Mutation(s): 0  Gene Names: atzA EC: 3.8.1.8
UniProt
Find proteins for P72156 (Pseudomonas sp. (strain ADP)) Explore P72156  Go to UniProtKB:  P72156

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PEG	H [auth A], J [auth B], L [auth C], N [auth D], P [auth E], R [auth F]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
FE	G [auth A], I [auth B], K [auth C], M [auth D], O [auth E], Q [auth F]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.196 
• R-Value Work: 0.166 
• R-Value Observed: 0.167 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 117.269	α = 90
b = 146.056	β = 90
c = 196.361	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-10-04 
• Released Date: 2015-03-11 
Deposition Author(s): Peat, T.S., Newman, J., Balotra, S., Lucent, D., Warden, A.C., Scott, C.

Revision History  

• Version 1.0: 2015-03-11
  Type: Initial release
  
• Version 1.1: 2015-03-25
  Changes: Database references