4YH2

Glutathione Transferase E6 from Drosophila melanogaster

• PDB DOI: https://doi.org/10.2210/pdb4YH2/pdb

• Classification: TRANSFERASE
• Organism(s): Drosophila melanogaster
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-02-26 Released: 2016-02-10 
• Deposition Author(s): Wongsantichon, J., Robinson, R.C., Ketterman, A.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.72 Å
• R-Value Free: 0.188 
• R-Value Work: 0.157 
• R-Value Observed: 0.159 

Literature

Epsilon glutathione transferases possess a unique class-conserved subunit interface motif that directly interacts with glutathione in the active site

Wongsantichon, J., Robinson, R.C., Ketterman, A.J.

(2015) Biosci Rep 35

• PubMed: 26487708 
• DOI: https://doi.org/10.1042/BSR20150183
• Primary Citation of Related Structures:  
  4YH2


• PubMed Abstract: 
  

  Epsilon class glutathione transferases (GSTs) have been shown to contribute significantly to insecticide resistance. We report a new Epsilon class protein crystal structure from Drosophila melanogaster for the glutathione transferase DmGSTE6. The structure reveals a novel Epsilon clasp motif that is conserved across hundreds of millions of years of evolution of the insect Diptera order. This histidine-serine motif lies in the subunit interface and appears to contribute to quaternary stability as well as directly connecting the two glutathiones in the active sites of this dimeric enzyme.

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Organizational Affiliation: 

Institute of Molecular and Cell Biology, A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138673.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 101.4 kDa 
• Atom Count: 8,099 
• Modelled Residue Count: 881 
• Deposited Residue Count: 888 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glutathione S transferase E6	A, B, C, D	222	Drosophila melanogaster	Mutation(s): 0  Gene Names: GstE6, CG17530, Dmel_CG17530 EC: 2.5.1.18
UniProt
Find proteins for A1ZB71 (Drosophila melanogaster) Explore A1ZB71  Go to UniProtKB:  A1ZB71

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GSH	E [auth A], F [auth B], G [auth C], H [auth D]	GLUTATHIONE C10 H17 N3 O6 S RWSXRVCMGQZWBV-WDSKDSINSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.72 Å
• R-Value Free: 0.188 
• R-Value Work: 0.157 
• R-Value Observed: 0.159 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 176.35	α = 90
b = 58.86	β = 128.25
c = 122.81	γ = 90

Software Package:

Software Name	Purpose
Aimless	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
xia2	data reduction
xia2	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-02-10 
Deposition Author(s): Wongsantichon, J., Robinson, R.C., Ketterman, A.J.

Revision History  

• Version 1.0: 2016-02-10
  Type: Initial release
  
• Version 1.1: 2020-02-05
  Changes: Data collection, Database references, Derived calculations
• Version 1.2: 2024-03-20
  Changes: Data collection, Database references