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Structural Insights into Omega-Class Glutathione Transferases: A Snapshot of Enzyme Reduction and Identification of the Non-Catalytic Ligandin Site.
Biology and Chemistry Report
4IS0
  •   Structure Details   Hide

    Structure Keywords

    Keywords TRANSFERASE, OXIDOREDUCTASE
    Text GST fold, oxidoreductase, ligand-binding, Cytosol, TRANSFERASE

    Polymeric Molecules

    Chain A
    Description Glutathione S-transferase omega-1 
    Mutation C32A 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 27568.0 
    Source Method genetically manipulated  
    Entity Name GSTO-1, Glutathione S-transferase omega 1-1, GSTO 1-1, Glutathione-dependent dehydroascorbate reductase, Monomethylarsonic acid reductase, MMA(V) reductase, S-(Phenacyl)glutathione reductase, SPG-R 

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    1R4  L-gamma-glutamyl-S-[2-(4-nitrophenyl)-2-oxoethyl]-L-cysteinylglycine  C18 H22 N4 O9 S   470.45  View 
    DTT  2,3-DIHYDROXY-1,4-DITHIOBUTANE  C4 H10 O2 S2   154.25  View 
    GDS  OXIDIZED GLUTATHIONE DISULFIDE  C20 H32 N6 O12 S2   612.63  View 
    SO4  SULFATE ION  O4 S   96.06  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A GSTO1_HUMAN D3DRA3     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc
    1.20.4.2      
    1.8.5.1      
    2.5.1.18      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A
    GO ID   Ontology GO Term Definition
    6805   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. 
    8152   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. 
    10880   Regulation of Release of Sequestered Calcium Ion Into Cytosol by Sarcoplasmic Reticulum  Any Process That Modulates the Rate Frequency or Extent of Release of Sequestered Calcium Ion Into Cytosol by the Sarcoplasmic Reticulum the Process in Which the Release of Sequestered Calcium Ion by Sarcoplasmic Reticulum Into Cytosol Occurs Via Calcium Release Channels. 
    10881   Regulation of Cardiac Muscle Contraction by Regulation of the Release of Sequestered Calcium Ion  Any Process That Modulates the Frequency Rate or Extent of Cardiac Muscle Contraction Via the Regulation of the Release of Sequestered Calcium Ion by Sarcoplasmic Reticulum Into Cytosol. the Sarcoplasmic Reticulum Is the Endoplasmic Reticulum of Striated Muscle Specialised For the Sequestration of Calcium Ions That Are Released Upon Receipt of a Signal Relayed by the T Tubules From the Neuromuscular Junction. 
    14810   Positive Regulation of Skeletal Muscle Contraction by Regulation of Release of Sequestered Calcium Ion  Any Process That Activates Maintains or Increases the Frequency Rate or Extent of Skeletal Muscle Contraction Via the Regulation of the Release of Sequestered Calcium Ion by Sarcoplasmic Reticulum Into Cytosol. the Sarcoplasmic Reticulum Is the Endoplasmic Reticulum of Striated Muscle Specialised For the Sequestration of Calcium Ions That Are Released Upon Receipt of a Signal Relayed by the T Tubules From the Neuromuscular Junction. 
    19852   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. 
    42178   Xenobiotic Catabolic Process  The Chemical Reactions and Pathways Resulting in the Breakdown of a Xenobiotic Compound a Compound Foreign to Living Organisms. Used of Chemical Compounds E.g. a Xenobiotic Chemical Such As a Pesticide. 
    44281   Small Molecule Metabolic Process  The Chemical Reactions and Pathways Involving Small Molecules Any Low Molecular Weight Monomeric Non Encoded Molecule. 
    55114   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. 
    60315   Negative Regulation of Ryanodine Sensitive Calcium Release Channel Activity  Any Process That Decreases the Activity of a Ryanodine Sensitive Calcium Release Channel. the Ryanodine Sensitive Calcium Release Channel Catalyzes the Transmembrane Transfer of a Calcium Ion by a Channel That Opens When a Ryanodine Class Ligand Has Been Bound by the Channel Complex or One of Its Constituent Parts. 
    60316   Positive Regulation of Ryanodine Sensitive Calcium Release Channel Activity  Any Process That Increases the Activity of a Ryanodine Sensitive Calcium Release Channel. the Ryanodine Sensitive Calcium Release Channel Catalyzes the Transmembrane Transfer of a Calcium Ion by a Channel That Opens When a Ryanodine Class Ligand Has Been Bound by the Channel Complex or One of Its Constituent Parts. 
    71243   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. 
    1901687   Glutathione Derivative Biosynthetic Process  The Chemical Reactions and Pathways Resulting in the Formation of Glutathione Derivative. 
    5737   Cytoplasm  All of the Contents of a Cell Excluding the Plasma Membrane and Nucleus But Including Other Subcellular Structures. 
    5829   Cytosol  The Part of the Cytoplasm That Does Not Contain Organelles But Which Does Contain Other Particulate Matter Such As Protein Complexes. 
    70062   Extracellular Vesicular Exosome  A Membrane Bounded Vesicle That Is Released Into the Extracellular Region by Fusion of the Limiting Endosomal Membrane of a Multivesicular Body with the Plasma Membrane. 
    4364   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. 
    16491   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. 
    16740   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. 
    45174   Glutathione Dehydrogenase (ascorbate) Activity  Catalysis of the Reaction: Dehydroascorbate + 2 Glutathione = L Ascorbate + Glutathione Disulfide. 
    50610   Methylarsonate Reductase Activity  Catalysis of the Reaction: 2 Glutathione + H(+) + Methylarsonate = Glutathione Disulfide + H(2)o + Methylarsonous Acid. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain A
    Common Name Human
    Scientific Name Homo sapiens  
    Gene gsto1, gsttlp28
    Host Scientific Name Escherichia coli  
    Host Strain Bl21 (de3)
    Host Vector Type Plasmid
    Host Plasmid Name pHUE


    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    10 10q25.1 9446     glutathione S-transferase omega 1 GSTO1