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Crystal Structure of ATP-Ca++ complex of purK: N5-carboxyaminoimidazole ribonucleotide synthetase
Biology and Chemistry Report
  •   Structure Details   Hide

    Structure Keywords

    Keywords LYASE
    Text carboxylase, ATP binding, LYASE

    Polymeric Molecules

    Chain A,B
    Description Phosphoribosylaminoimidazole carboxylase, ATPase subunit 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 42224.6 
    Source Method genetically manipulated  
    Entity Name N5-carboxyaminoimidazole ribonucleotide synthetase 

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    ATP  ADENOSINE-5'-TRIPHOSPHATE  C10 H16 N5 O13 P3   507.18  View 
    CA  CALCIUM ION  Ca   40.08  View 
    PO4  PHOSPHATE ION  O4 P   94.97  View 
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B Q81ZH7_BACAN Q81ZH7     

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc
    A B      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    6189   'de Novo' Imp Biosynthetic Process  The Chemical Reactions and Pathways Resulting in the Formation of Imp Inosine Monophosphate by the Stepwise Assembly of a Purine Ring On Ribose 5 Phosphate. 
    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. 
    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. 
    4638   Phosphoribosylaminoimidazole Carboxylase Activity  Catalysis of the Reaction: 5 Amino 1 (5 Phospho D Ribosyl)imidazole 4 Carboxylate + 2 H(+) = 5 Amino 1 (5 Phospho D Ribosyl)imidazole + Co(2). 
    5524   ATP Binding  Interacting Selectively and Non Covalently with ATP Adenosine 5' Triphosphate a Universally Important Coenzyme and Enzyme Regulator. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 
    51287   NAD Binding  Interacting Selectively and Non Covalently with Nicotinamide Adenine Dinucleotide a Coenzyme Involved in Many Redox and Biosynthetic Reactions; Binding May Be to Either the Oxidized Form Nad+ or the Reduced Form Nadh. 

  •   Gene Details   Hide

    Genetic Source

    Chain A,B
    Common Name Anthrax Anthrax Bacterium
    Scientific Name Bacillus anthracis  
    Strain A0248
    Gene bas0276, ba_0289, gbaa_0289, purk
    Host Scientific Name Escherichia coli  
    Host Strain Bl21 Codonplus (de3) Ril
    Host Vector Type Plasmid
    Host Plasmid Name pDEST15