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A three-gate structure of topoisomerase IV from Streptococcus pneumoniae
Biology and Chemistry Report
4I3H
  •   Structure Details   Hide

    Structure Keywords

    Keywords ISOMERASE/DNA
    Text DNA unwinding, supercoiling, ISOMERASE-DNA complex

    Polymeric Molecules

    Chain E,G
    Description DNA (5'-D(*CP*AP*AP*AP*GP*GP*CP*GP*GP*TP*AP*AP*TP*AP*CP*GP*GP*TP*TP*AP*TP*CP*CP*AP*CP*AP*GP*AP*AP*TP*CP*AP*GP*G)-3') 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polydeoxyribonucleotide 
    Formula Weight 10525.9 
    Source Method synthetic  
    Chain F,H
    Description DNA (5'-D(*CP*CP*TP*GP*AP*TP*TP*CP*TP*GP*TP*GP*GP*AP*TP*AP*AP*CP*CP*GP*TP*AP*TP*TP*AP*CP*CP*GP*CP*CP*TP*TP*TP*G)-3') 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polydeoxyribonucleotide 
    Formula Weight 10391.8 
    Source Method synthetic  
    Chain A,B
    Description Topoisomerase IV subunit B, DNA topoisomerase 4 subunit A chimera 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 128325.0 
    Source Method genetically manipulated  

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    MG  MAGNESIUM ION  Mg   24.31  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B D6ZLV0_STRP0 D6ZLV0     
    A,B Q3HZ71_STREE Q3HZ71     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc
    A B  5.99.1.3      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    6200   ATP Catabolic Process  The Chemical Reactions and Pathways Resulting in the Breakdown of ATP Adenosine 5' Triphosphate a Universally Important Coenzyme and Enzyme Regulator. 
    6259   DNA Metabolic Process  Any Cellular Metabolic Process Involving Deoxyribonucleic Acid. This Is One of the Two Main Types of Nucleic Acid Consisting of a Long Unbranched Macromolecule Formed From One or More Commonly Two Strands of Linked Deoxyribonucleotides. 
    6265   DNA Topological Change  The Process in Which a Transformation Is Induced in the Topological Structure of a Double Stranded DNA Helix Resulting in a Change in Linking Number. 
    7059   Chromosome Segregation  The Process in Which Genetic Material in the Form of Chromosomes Is Organized Into Specific Structures and Then Physically Separated and Apportioned to Two or More Sets. in Eukaryotes Chromosome Segregation Begins with the Condensation of Chromosomes Includes Chromosome Separation and Ends When Chromosomes Have Completed Movement to the Spindle Poles. 
    5694   Chromosome  A Structure Composed of a Very Long Molecule of DNA and Associated Proteins (e.g. Histones) That Carries Hereditary Information. 
    166   Nucleotide Binding  Interacting Selectively and Non Covalently with a Nucleotide Any Compound Consisting of a Nucleoside That Is Esterified with (ortho)phosphate or an Oligophosphate At Any Hydroxyl Group On the Ribose or Deoxyribose. 
    287   Magnesium Ion Binding  Interacting Selectively and Non Covalently with Magnesium (mg) Ions. 
    3677   DNA Binding  Any Molecular Function by Which a Gene Product Interacts Selectively and Non Covalently with DNA (deoxyribonucleic Acid). 
    3916   DNA Topoisomerase Activity  Catalysis of the Transient Cleavage and Passage of Individual DNA Strands or Double Helices Through One Another Resulting a Topological Transformation in Double Stranded Dna. 
    3918   DNA topoisomerase type II (ATP-hydrolyzing) activity  Catalysis of a DNA Topological Transformation by Transiently Cleaving a Pair of Complementary DNA Strands to Form a Gate Through Which a Second Double Stranded DNA Segment Is Passed After Which the Severed Strands in the First DNA Segment Are Rejoined; Product Release Is Coupled to ATP Binding and Hydrolysis; Changes the Linking Number in Multiples of 2. 
    5524   ATP Binding  Interacting Selectively and Non Covalently with ATP Adenosine 5' Triphosphate a Universally Important Coenzyme and Enzyme Regulator. 
    16853   Isomerase Activity  Catalysis of the Geometric or Structural Changes Within One Molecule. Isomerase Is the Systematic Name For Any Enzyme of EC Class 5. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain A,B
    Scientific Name Streptococcus pneumoniae  
    Strain TIGR4
    ATCC Source Baa 334
    Gene pare, parc
    Host Scientific Name Escherichia coli