Show PDB file:   
         Plain Text   HTML   (compressed file size)
QuickSearch:   
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)Asymmetric Unit
(-)Biological Unit 1
(-)Biological Unit 2
collapse expand < >
Image Asymmetric Unit
Asymmetric Unit  (Jmol Viewer)
Image Biological Unit 1
Biological Unit 1  (Jmol Viewer)
Image Biological Unit 2
Biological Unit 2  (Jmol Viewer)

(-) Description

Title :  HUMAN GLUTATHIONE-S-TRANSFERASE T1-1, W234R MUTANT, APO FORM
 
Authors :  K. Tars, A. -K. Larsson, A. Shokeer, B. Olin, B. Mannervik, G. J. Kleywegt
Date :  12 Oct 05  (Deposition) - 30 Nov 05  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.40
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A,B  (1x)
Biol. Unit 2:  C,D  (1x)
Keywords :  Transferase, Glutathione, Glutathione Transferase, T1-1, Polymorphism (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  K. Tars, A. -K. Larsson, A. Shokeer, B. Olin, B. Mannervik, G. J. Kleywegt
Structural Basis Of The Suppressed Catalytic Activity Of Wild-Type Human Glutathione Transferase T1-1 Compared To Its W234R Mutant.
J. Mol. Biol. V. 355 96 2006
PubMed-ID: 16298388  |  Reference-DOI: 10.1016/J.JMB.2005.10.049

(-) Compounds

Molecule 1 - GLUTATHIONE S-TRANSFERASE THETA 1
    ChainsA, B, C, D
    EC Number2.5.1.18
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System StrainXL1-BLUE
    Expression System Taxid562
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymHUMAN GLUTATHIONE TRANSFERASE T1-1, GST CLASS- THETA 1

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit ABCD
Biological Unit 1 (1x)AB  
Biological Unit 2 (1x)  CD

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2C3T)

(-) Sites  (0, 0)

(no "Site" information available for 2C3T)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2C3T)

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Val A:54 -Pro A:55
2Val B:54 -Pro B:55
3Val C:54 -Pro C:55
4Val D:54 -Pro D:55

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (4, 16)

Asymmetric Unit (4, 16)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_014501A21TGSTT1_HUMANPolymorphism2266635A/B/C/DA21T
2UniProtVAR_014502D141NGSTT1_HUMANPolymorphism2266633A/B/C/DD141N
3UniProtVAR_014503V169IGSTT1_HUMANPolymorphism2266637A/B/C/DV169I
4UniProtVAR_014504E173KGSTT1_HUMANPolymorphism2234953A/B/C/DE173K

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (4, 8)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_014501A21TGSTT1_HUMANPolymorphism2266635A/BA21T
2UniProtVAR_014502D141NGSTT1_HUMANPolymorphism2266633A/BD141N
3UniProtVAR_014503V169IGSTT1_HUMANPolymorphism2266637A/BV169I
4UniProtVAR_014504E173KGSTT1_HUMANPolymorphism2234953A/BE173K

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (4, 8)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_014501A21TGSTT1_HUMANPolymorphism2266635C/DA21T
2UniProtVAR_014502D141NGSTT1_HUMANPolymorphism2266633C/DD141N
3UniProtVAR_014503V169IGSTT1_HUMANPolymorphism2266637C/DV169I
4UniProtVAR_014504E173KGSTT1_HUMANPolymorphism2234953C/DE173K

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 4)

Asymmetric Unit (1, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1GST_CTERPS50405 Soluble glutathione S-transferase C-terminal domain profile.GSTT1_HUMAN88-220
 
 
 
  4A:88-220
B:88-220
C:88-220
D:88-220
Biological Unit 1 (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1GST_CTERPS50405 Soluble glutathione S-transferase C-terminal domain profile.GSTT1_HUMAN88-220
 
 
 
  2A:88-220
B:88-220
-
-
Biological Unit 2 (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1GST_CTERPS50405 Soluble glutathione S-transferase C-terminal domain profile.GSTT1_HUMAN88-220
 
 
 
  2-
-
C:88-220
D:88-220

(-) Exons   (0, 0)

(no "Exon" information available for 2C3T)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:239
 aligned with GSTT1_HUMAN | P30711 from UniProtKB/Swiss-Prot  Length:240

    Alignment length:239
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         
          GSTT1_HUMAN     2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPWVLAMIR 240
               SCOP domains d2c3ta1 A:2-79 automated matches                                              d2c3ta2 A:80-240 automated matches                                                                                                                                SCOP domains
               CATH domains 2c3tA01 A:2-80 Glutaredoxin                                                    2c3tA02 A:81-240  [code=1.20.1050.10, no name defined]                                                                                                           CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeeeeee...hhhhhhhhhhhh....eeee.....hhhhhhhhhhhh....eeeeee.eeee.hhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhh....hhhhhhhhhhhhhhhhhhhhh................hhhhhhhhhhhhhhhh........hhhhhhhhhhhh..hhhhhhhhhhhh........hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------T-----------------------------------------------------------------------------------------------------------------------N---------------------------I---K------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------GST_CTER  PDB: A:88-220 UniProt: 88-220                                                                                              -------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2c3t A   2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPRVLAMIR 240
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         

Chain B from PDB  Type:PROTEIN  Length:239
 aligned with GSTT1_HUMAN | P30711 from UniProtKB/Swiss-Prot  Length:240

    Alignment length:239
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         
          GSTT1_HUMAN     2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPWVLAMIR 240
               SCOP domains d2c3tb1 B:2-79 automated matches                                              d2c3tb2 B:80-240 automated matches                                                                                                                                SCOP domains
               CATH domains 2c3tB01 B:2-80 Glutaredoxin                                                    2c3tB02 B:81-240  [code=1.20.1050.10, no name defined]                                                                                                           CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeeeeee...hhhhhhhhhhhh....eeee.....hhhhhhhhhhhh....eeeeee.eeee.hhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhh....hhhhhhhhhhhhhhhhhhhhh................hhhhhhhhhhhhhhhh........hhhhhhhhhhhh..hhhhhhhhhhhh........hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------T-----------------------------------------------------------------------------------------------------------------------N---------------------------I---K------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------GST_CTER  PDB: B:88-220 UniProt: 88-220                                                                                              -------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2c3t B   2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPRVLAMIR 240
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         

Chain C from PDB  Type:PROTEIN  Length:239
 aligned with GSTT1_HUMAN | P30711 from UniProtKB/Swiss-Prot  Length:240

    Alignment length:239
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         
          GSTT1_HUMAN     2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPWVLAMIR 240
               SCOP domains d2c3tc1 C:2-79 automated matches                                              d2c3tc2 C:80-240 automated matches                                                                                                                                SCOP domains
               CATH domains 2c3tC01 C:2-80 Glutaredoxin                                                    2c3tC02 C:81-240  [code=1.20.1050.10, no name defined]                                                                                                           CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeeeeee...hhhhhhhhhhhh....eeee.....hhhhhhhhhhhh....eeeeee.eeee.hhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhh....hhhhhhhhhhhhhhhhhhhhh................hhhhhhhhhhhhhhhh........hhhhhhhhhhhh..hhhhhhhhhhhh........hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------T-----------------------------------------------------------------------------------------------------------------------N---------------------------I---K------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------GST_CTER  PDB: C:88-220 UniProt: 88-220                                                                                              -------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2c3t C   2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPRVLAMIR 240
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         

Chain D from PDB  Type:PROTEIN  Length:239
 aligned with GSTT1_HUMAN | P30711 from UniProtKB/Swiss-Prot  Length:240

    Alignment length:239
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         
          GSTT1_HUMAN     2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPWVLAMIR 240
               SCOP domains d2c3td1 D:2-79 automated matches                                              d2c3td2 D:80-240 automated matches                                                                                                                                SCOP domains
               CATH domains 2c3tD01 D:2-80 Glutaredoxin                                                    2c3tD02 D:81-240  [code=1.20.1050.10, no name defined]                                                                                                           CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeeeeee...hhhhhhhhhhhh....eeee.....hhhhhhhhhhhh....eeeeee.eeee.hhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhh....hhhhhhhhhhhhhhhhhhhhh................hhhhhhhhhhhhhhhh........hhhhhhhhhhhh..hhhhhhhhhhhh........hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------T-----------------------------------------------------------------------------------------------------------------------N---------------------------I---K------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------GST_CTER  PDB: D:88-220 UniProt: 88-220                                                                                              -------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2c3t D   2 GLELYLDLLSQPCRAVYIFAKKNDIPFELRIVDLIKGQHLSDAFAQVNPLKKVPALKDGDFTLTESVAILLYLTRKYKVPDYWYPQDLQARARVDEYLAWQHTTLRRSCLRALWHKVMFPVFLGEPVSPQTLAATLAELDVTLQLLEDKFLQNKAFLTGPHISLADLVAITELMHPVGAGCQVFEGRPKLATWRQRVEAAVGEDLFQEAHEVILKAKDFPPADPTIKQKLMPRVLAMIR 240
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231         

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (2, 8)

Asymmetric Unit

(-) CATH Domains  (2, 8)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2C3T)

(-) Gene Ontology  (9, 9)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C,D   (GSTT1_HUMAN | P30711)
molecular function
    GO:0004602    glutathione peroxidase activity    Catalysis of the reaction: 2 glutathione + hydrogen peroxide = oxidized glutathione + 2 H2O.
    GO:0004364    glutathione transferase activity    Catalysis of the reaction: R-X + glutathione = H-X + R-S-glutathione. R may be an aliphatic, aromatic or heterocyclic group; X may be a sulfate, nitrile or halide group.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0098869    cellular oxidant detoxification    Any process carried out at the cellular level that reduces or removes the toxicity superoxide radicals or hydrogen peroxide.
    GO:1901687    glutathione derivative biosynthetic process    The chemical reactions and pathways resulting in the formation of glutathione derivative.
    GO:0006749    glutathione metabolic process    The chemical reactions and pathways involving glutathione, the tripeptide glutamylcysteinylglycine, which acts as a coenzyme for some enzymes and as an antioxidant in the protection of sulfhydryl groups in enzymes and other proteins; it has a specific role in the reduction of hydrogen peroxide (H2O2) and oxidized ascorbate, and it participates in the gamma-glutamyl cycle.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.

 Visualization

(-) Interactive Views

Asymmetric Unit
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
    STRAP
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    RasMol
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
 
  Ligands, Modified Residues, Ions
(no "Ligands, Modified Residues, Ions" information available for 2c3t)
 
  Sites
(no "Sites" information available for 2c3t)
 
  Cis Peptide Bonds
    Val A:54 - Pro A:55   [ RasMol ]  
    Val B:54 - Pro B:55   [ RasMol ]  
    Val C:54 - Pro C:55   [ RasMol ]  
    Val D:54 - Pro D:55   [ RasMol ]  
 
Biological Units
  Complete Structure
    Biological Unit 1  [ Jena3D ]
    Biological Unit 2  [ Jena3D ]

(-) Still Images

Jmol
  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
Molscript
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
  2c3t
    Family and Domain InformationProDom | SYSTERS
    General Structural InformationGlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in MembranesOPM
    Protein SurfaceSURFACE
    Secondary StructureDSSP (structure derived) | HSSP (homology derived)
    Structural GenomicsGeneCensus
    Structural NeighboursCE | VAST
    Structure ClassificationCATH | Dali | SCOP
    Validation and Original DataBMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
 
Access by UniProt ID/Accession number
  GSTT1_HUMAN | P30711
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  2.5.1.18
    General Enzyme InformationBRENDA | EC-PDB | Enzyme | IntEnz
    PathwayKEGG | MetaCyc
 
Access by Disease Identifier   (MIM ID)
  (no 'MIM ID' available)
    Disease InformationOMIM
 
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related InformationGenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain InformationXDom
    Interatomic Contacts of Structural UnitsCSU
    Ligand-protein ContactsLPC
    Protein CavitiescastP
    Sequence and Secondary StructurePDBCartoon
    Structure AlignmentSTRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence BrowserSTING
 
Access by UniProt ID/Accession number
  GSTT1_HUMAN | P30711
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        GSTT1_HUMAN | P307112c3n 2c3q

(-) Related Entries Specified in the PDB File

2c3n HUMAN GLUTATHIONE-S-TRANSFERASE T1-1, APO FORM
2c3q HUMAN GLUTATHIONE-S-TRANSFERASE T1-1 W234R MUTANT, COMPLEX WITH S-HEXYLGLUTATHIONE