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(-) Description

Title :  HUMAN GLUTATHIONE TRANSFERASE O2
 
Authors :  H. Zhou, P. G. Board, A. J. Oakley
Date :  16 Dec 10  (Deposition) - 25 Jan 12  (Release) - 04 Sep 13  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.70
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Glutathione Transferase, Gst, Dehydroascorbate Reductase, Transferase, Reductase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  H. Zhou, J. Brock, D. Liu, P. G. Board, A. J. Oakley
Structural Insights Into The Dehydroascorbate Reductase Activity Of Human Omega-Class Glutathione Transferases.
J. Mol. Biol. V. 420 190 2012
PubMed-ID: 22522127  |  Reference-DOI: 10.1016/J.JMB.2012.04.014

(-) Compounds

Molecule 1 - GLUTATHIONE S-TRANSFERASE OMEGA-2
    ChainsA, B
    EC Number2.5.1.18
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPQE30
    Expression System StrainM15/REP4
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneGSTO2
    MutationYES
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymGSTO-2

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 4)

Asymmetric/Biological Unit (3, 4)
No.NameCountTypeFull Name
1CL2Ligand/IonCHLORIDE ION
2GOL1Ligand/IonGLYCEROL
3PEG1Ligand/IonDI(HYDROXYETHYL)ETHER

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY A:189 , LEU A:191 , ASP A:192 , SER A:195 , HOH A:287 , HOH A:338 , ASP B:192 , SER B:195BINDING SITE FOR RESIDUE PEG A 240
2AC2SOFTWARETRP A:209 , HOH A:411BINDING SITE FOR RESIDUE GOL A 241
3AC3SOFTWARESER A:205 , HOH A:245 , HOH A:259 , LEU B:202BINDING SITE FOR RESIDUE CL A 242
4AC4SOFTWARESER B:205 , HOH B:246 , HOH B:248BINDING SITE FOR RESIDUE CL B 240

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3Q18)

(-) Cis Peptide Bonds  (4, 4)

Asymmetric/Biological Unit
No.Residues
1Ile A:72 -Pro A:73
2Tyr A:84 -Glu A:85
3Ile B:72 -Pro B:73
4Tyr B:84 -Glu B:85

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (2, 4)

Asymmetric/Biological Unit (2, 4)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_049492C130YGSTO2_HUMANPolymorphism45582439A/BC130Y
2UniProtVAR_016812N142DGSTO2_HUMANPolymorphism156697A/BN142D

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

(-) PROSITE Motifs  (2, 4)

Asymmetric/Biological Unit (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1GST_NTERPS50404 Soluble glutathione S-transferase N-terminal domain profile.GSTO2_HUMAN22-101
 
  2A:22-101
B:22-101
2GST_CTERPS50405 Soluble glutathione S-transferase C-terminal domain profile.GSTO2_HUMAN106-231
 
  2A:106-231
B:106-231

(-) Exons   (0, 0)

(no "Exon" information available for 3Q18)

(-) Sequences/Alignments

Asymmetric/Biological 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:236
 aligned with GSTO2_HUMAN | Q9H4Y5 from UniProtKB/Swiss-Prot  Length:243

    Alignment length:236
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233      
          GSTO2_HUMAN     4 DATRTLGKGSQPPGPVPEGLIRIYSMRFCPYSHRTRLVLKAKDIRHEVVNINLRNKPEWYYTKHPFGHIPVLETSQCQLIYESVIACEYLDDAYPGRKLFPYDPYERARQKMLLELFCKVPHLTKECLVALRCGRECTNLKAALRQEFSNLEEILEYQNTTFFGGTCISMIDYLLWPWFERLDVYGILDCVSHTPALRLWISAMKWDPTVCALLMDKSIFQGFLNLYFQNNPNAFD 239
               SCOP domains d3q18a1 A:4-102 automated matches                                                                  d3q18a2 A:103-239 automated matches                                                                                                       SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....................eeeee...hhhhhhhhhhhhhh...eeeee......hhhhhhh.......eee.....ee.hhhhhhhhhhhhh........hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhh.hhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------Y-----------D------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------GST_NTER  PDB: A:22-101 UniProt: 22-101                                         ----GST_CTER  PDB: A:106-231 UniProt: 106-231                                                                                     -------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3q18 A   4 DATRTLGKGSQPPGPVPEGLIRIYSMRFCPYSHRTRLVLKAKDIRHEVVNINLRNKPEWYYTKHPFGHIPVLETSQSQLIYESVIACEYLDDAYPGRKLFPYDPYERARQKMLLELFSKVPHLTKECLVALRSGRESTNLKAALRQEFSNLEEILEYQNTTFFGGTSISMIDYLLWPWFERLDVYGILDCVSHTPALRLWISAMKWDPTVSALLMDKSIFQGFLNLYFQNNPNAFD 239
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233      

Chain B from PDB  Type:PROTEIN  Length:233
 aligned with GSTO2_HUMAN | Q9H4Y5 from UniProtKB/Swiss-Prot  Length:243

    Alignment length:233
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236   
          GSTO2_HUMAN     7 RTLGKGSQPPGPVPEGLIRIYSMRFCPYSHRTRLVLKAKDIRHEVVNINLRNKPEWYYTKHPFGHIPVLETSQCQLIYESVIACEYLDDAYPGRKLFPYDPYERARQKMLLELFCKVPHLTKECLVALRCGRECTNLKAALRQEFSNLEEILEYQNTTFFGGTCISMIDYLLWPWFERLDVYGILDCVSHTPALRLWISAMKWDPTVCALLMDKSIFQGFLNLYFQNNPNAFD 239
               SCOP domains d3q18b1 B:7-102 automated matches                                                               d3q18b2 B:103-239 automated matches                                                                                                       SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .................eeeee...hhhhhhhhhhhhhh...eeeee......hhhhhhh.......eee.....ee.hhhhhhhhhhhhh........hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhh..hhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------Y-----------D------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------GST_NTER  PDB: B:22-101 UniProt: 22-101                                         ----GST_CTER  PDB: B:106-231 UniProt: 106-231                                                                                     -------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3q18 B   7 RTLGKGSQPPGPVPEGLIRIYSMRFCPYSHRTRLVLKAKDIRHEVVNINLRNKPEWYYTKHPFGHIPVLETSQSQLIYESVIACEYLDDAYPGRKLFPYDPYERARQKMLLELFSKVPHLTKECLVALRSGRESTNLKAALRQEFSNLEEILEYQNTTFFGGTSISMIDYLLWPWFERLDVYGILDCVSHTPALRLWISAMKWDPTVSALLMDKSIFQGFLNLYFQNNPNAFD 239
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236   

   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, 4)

Asymmetric/Biological Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3Q18)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3Q18)

(-) Gene Ontology  (17, 17)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (GSTO2_HUMAN | Q9H4Y5)
molecular function
    GO:0045174    glutathione dehydrogenase (ascorbate) activity    Catalysis of the reaction: dehydroascorbate + 2 glutathione = L-ascorbate + glutathione disulfide.
    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:0050610    methylarsonate reductase activity    Catalysis of the reaction: 2 glutathione + H(+) + methylarsonate = glutathione disulfide + H(2)O + methylarsonous acid.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    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:0019852    L-ascorbic acid metabolic process    The chemical reactions and pathways involving L-ascorbic acid, (2R)-2-[(1S)-1,2-dihydroxyethyl]-4-hydroxy-5-oxo-2,5-dihydrofuran-3-olate; L-ascorbic acid is vitamin C and has co-factor and anti-oxidant activities in many species.
    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:0071243    cellular response to arsenic-containing substance    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an arsenic stimulus from compounds containing arsenic, including arsenates, arsenites, and arsenides.
    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.
    GO:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0006805    xenobiotic metabolic process    The chemical reactions and pathways involving a xenobiotic compound, a compound foreign to living organisms. Used of chemical compounds, e.g. a xenobiotic chemical, such as a pesticide.
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.

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 Related Entries

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

UniProtKB/Swiss-Prot
        GSTO2_HUMAN | Q9H4Y53q19 3qag

(-) Related Entries Specified in the PDB File

1eem HUMAN GLUTATHIONE TRANSFERASE O1
3q19