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Crystal structure and functional studies of an unusual L-cysteine desulfurase from Archaeoglobus fulgidus.
Biology and Chemistry Report
  •   Structure Details   Hide

    Structure Keywords

    Keywords TRANSFERASE
    Text Transferase and IscS, TRANSFERASE

    Polymeric Molecules

    Chain A
    Description Probable cysteine desulfurase 2 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 41889.0 
    Source Method genetically manipulated  

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    CA  CALCIUM ION  Ca   40.08  View 
    CL  CHLORIDE ION  Cl   35.45  View 
    PG4  TETRAETHYLENE GLYCOL  C8 H18 O5   194.23  View 
    PMP  4'-DEOXY-4'-AMINOPYRIDOXAL-5'-PHOSPHATE  C8 H13 N2 O5 P   248.17  View 
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A ISCS2_ARCFU O29689     

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A
    GO ID   Ontology GO Term Definition
    6534   Cysteine Metabolic Process  The Chemical Reactions and Pathways Involving Cysteine 2 Amino 3 Mercaptopropanoic Acid. 
    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. 
    44571   [2fe 2s] Cluster Assembly  The Incorporation of Two Iron Atoms and Two Sulfur Atoms Into an Iron Sulfur Cluster. 
    5737   Cytoplasm  All of the Contents of a Cell Excluding the Plasma Membrane and Nucleus But Including Other Subcellular Structures. 
    3824   Catalytic Activity  Catalysis of a Biochemical Reaction At Physiological Temperatures. in Biologically Catalyzed Reactions the Reactants Are Known As Substrates and the Catalysts Are Naturally Occurring Macromolecular Substances Known As Enzymes. Enzymes Possess Specific Binding Sites For Substrates and Are Usually Composed Wholly or Largely of Protein But RNA That Has Catalytic Activity (ribozyme) Is Often Also Regarded As Enzymatic. 
    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. 
    30170   Pyridoxal Phosphate Binding  Interacting Selectively and Non Covalently with Pyridoxal 5' Phosphate 3 Hydroxy 5 (hydroxymethyl) 2 Methyl4 Pyridine Carboxaldehyde 5' Phosphate the Biologically Active Form of Vitamin B6. 
    31071   Cysteine Desulfurase Activity  Catalysis of the Reaction: L Cysteine + [enzyme] Cysteine = L Alanine + [enzyme] S Sulfanylcysteine. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 
    51536   Iron Sulfur Cluster Binding  Interacting Selectively and Non Covalently with an Iron Sulfur Cluster a Combination of Iron and Sulfur Atoms. 
    51537   2 Iron 2 Sulfur Cluster Binding  Interacting Selectively and Non Covalently with a 2 Iron 2 Sulfur (2fe 2s) Cluster; This Cluster Consists of Two Iron Atoms with Two Inorganic Sulfur Atoms Found Between the Irons and Acting As Bridging Ligands. 

  •   Gene Details   Hide

    Genetic Source

    Chain A
    Scientific Name Archaeoglobus fulgidus  
    Strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126
    Gene af0564, af_0564, iscs2
    Host Scientific Name Escherichia coli  
    Host Strain C41

    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    - - 1483780     class-V aminotransferase NIFS-2