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The zinc ion bound form of crystal structure of E.coli ExoI-ssDNA complex
Biology and Chemistry Report
4HCC
  •   Structure Details   Hide

    Structure Keywords

    Keywords HYDROLASE/DNA
    Text DnaQ family, Exonuclease C-terminal family, HYDROLASE-DNA complex

    Polymeric Molecules

    Chain A,B
    Description Exodeoxyribonuclease I 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 55382.1 
    Source Method genetically manipulated  
    Entity Name Exonuclease I, DNA deoxyribophosphodiesterase, dRPase 
    Chain C,D
    Description DNA (5'-D(*AP*AP*AP*AP*AP*AP*AP*AP*AP*AP*AP*A)-3') 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polydeoxyribonucleotide 
    Formula Weight 3713.6 
    Source Method synthetic  

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    IPA  ISOPROPYL ALCOHOL  C3 H8 O   60.10  View 
    PO4  PHOSPHATE ION  O4 P   94.97  View 
    SO4  SULFATE ION  O4 S   96.06  View 
    ZN  ZINC ION  Zn   65.41  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B EX1_ECOLI P04995     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc
    A B  3.1.11.1      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    6281   DNA Repair  The Process of Restoring DNA After Damage. Genomes Are Subject to Damage by Chemical and Physical Agents in the Environment (e.g. Uv and Ionizing Radiations Chemical Mutagens Fungal and Bacterial Toxins Etc.) and by Free Radicals or Alkylating Agents Endogenously Generated in Metabolism. DNA Is Also Damaged Because of Errors During Its Replication. a Variety of Different DNA Repair Pathways Have Been Reported That Include Direct Reversal Base Excision Repair Nucleotide Excision Repair Photoreactivation Bypass Double Strand Break Repair Pathway and Mismatch Repair Pathway. 
    6974   Cellular Response to DNA Damage Stimulus  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 a Stimulus Indicating Damage to Its DNA From Environmental Insults or Errors During Metabolism. 
    90305   Nucleic Acid Phosphodiester Bond Hydrolysis  The Nucleic Acid Metabolic Process in Which the Phosphodiester Bonds Between Nucleotides Are Cleaved by Hydrolysis. 
    4518   Nuclease Activity  Catalysis of the Hydrolysis of Ester Linkages Within Nucleic Acids. 
    4527   Exonuclease Activity  Catalysis of the Hydrolysis of Ester Linkages Within Nucleic Acids by Removing Nucleotide Residues From the 3' or 5' End. 
    16787   Hydrolase Activity  Catalysis of the Hydrolysis of Various Bonds E.g. C O C N C C Phosphoric Anhydride Bonds Etc. Hydrolase Is the Systematic Name For Any Enzyme of EC Class 3. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain A,B
    Scientific Name Escherichia coli  
    Strain DH5ALPHA
    Gene b2011, cpea, jw1993, sbcb, xona
    Host Scientific Name Escherichia coli  
    Host Strain Bl21(de3)
    Host Vector Type Plasmid
    Host Plasmid Name pET22b