4PQH

Crystal structure of glutathione transferase lambda1 from Populus trichocarpa


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.149 

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Ligand Structure Quality Assessment 


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Literature

Structural and enzymatic insights into Lambda glutathione transferases from Populus trichocarpa, monomeric enzymes constituting an early divergent class specific to terrestrial plants.

Lallement, P.A.Meux, E.Gualberto, J.M.Prosper, P.Didierjean, C.Saul, F.Haouz, A.Rouhier, N.Hecker, A.

(2014) Biochem J 462: 39-52

  • DOI: 10.1042/BJ20140390
  • Primary Citation of Related Structures:  
    4PQH, 4PQI

  • PubMed Abstract: 
  • GSTs represent a superfamily of multifunctional proteins which play crucial roles in detoxification processes and secondary metabolism. Instead of promoting the conjugation of glutathione to acceptor molecules as do most GSTs, members of the Lambda class (GSTLs) catalyse deglutathionylation reactions via a catalytic cysteine residue ...

    GSTs represent a superfamily of multifunctional proteins which play crucial roles in detoxification processes and secondary metabolism. Instead of promoting the conjugation of glutathione to acceptor molecules as do most GSTs, members of the Lambda class (GSTLs) catalyse deglutathionylation reactions via a catalytic cysteine residue. Three GSTL genes (Pt-GSTL1, Pt-GSTL2 and Pt-GSTL3) are present in Populus trichocarpa, but two transcripts, differing in their 5' extremities, were identified for Pt-GSTL3. Transcripts for these genes were primarily found in flowers, fruits, petioles and buds, but not in leaves and roots, suggesting roles associated with secondary metabolism in these organs. The expression of GFP-fusion proteins in tobacco showed that Pt-GSTL1 is localized in plastids, whereas Pt-GSTL2 and Pt-GSTL3A and Pt-GSTL3B are found in both the cytoplasm and the nucleus. The resolution of Pt-GSTL1 and Pt-GSTL3 structures by X-ray crystallography indicated that, although these proteins adopt a canonical GST fold quite similar to that found in dimeric Omega GSTs, their non-plant counterparts, they are strictly monomeric. This might explain some differences in the enzymatic properties of both enzyme types. Finally, from competition experiments between aromatic substrates and a fluorescent probe, we determined that the recognition of glutathionylated substrates is favoured over non-glutathionylated forms.


    Organizational Affiliation

    ¶Institut Pasteur, Département de Biologie Structurale et Chimie, Plate-Forme de Cristallographie, CNRS-UMR3528, 75724 Paris, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
glutathione transferase lambda1A, B236Populus trichocarpaMutation(s): 0 
Gene Names: POPTR_0008s04660gPOPTR_008G046800
UniProt
Find proteins for B9HM14 (Populus trichocarpa)
Explore B9HM14 
Go to UniProtKB:  B9HM14
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB9HM14
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GSH
Query on GSH

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
E [auth B]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.149 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.009α = 91.53
b = 45.835β = 102.43
c = 66.739γ = 96.26
Software Package:
Software NamePurpose
BM14data collection
MOLREPphasing
PHENIXrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-06-25
    Type: Initial release
  • Version 1.1: 2014-08-27
    Changes: Database references