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An Information Portal to 105212 Biological Macromolecular Structures

E. COLI (lacZ) BETA-GALACTOSIDASE (E537Q) IN COMPLEX WITH LACTOSE
Biology and Chemistry Report
1JYN
  •   Structure Details   Hide

    Structure Keywords

    Keywords HYDROLASE
    Text TIM BARREL (ALPHA/BETA BARREL), JELLY-ROLL BARREL, IMMUNOGLOBULIN, BETA SUPERSANDWICH, HYDROLASE

    Polymeric Molecules

    Chain A,B,C,D
    Description Beta-Galactosidase 
    Mutation E537Q 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 116506.0 
    Source Method genetically manipulated  
    Entity Name LACTASE; lacZ; beta-d-galactosidase 
    Entity Name Sys E.C.3.2.1.23 

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    DMS  DIMETHYL SULFOXIDE  C2 H6 O S   78.13  View 
    LAT  BETA-LACTOSE  C12 H22 O11   342.30  View 
    MG  MAGNESIUM ION  Mg   24.31  View 
    NA  SODIUM ION  Na   22.99  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B,C,D BGAL_ECOLI P00722     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc Catalytic Site(s)
    A B C D  3.2.1.23        
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B,C,D
    GO ID   Ontology GO Term Definition
    5975   Carbohydrate Metabolic Process  The Chemical Reactions and Pathways Involving Carbohydrates Any of a Group of Organic Compounds Based of the General Formula Cx(h2o)y. Includes the Formation of Carbohydrate Derivatives by the Addition of a Carbohydrate Residue to Another Molecule. 
    5990   Lactose Catabolic Process  The Chemical Reactions and Pathways Resulting in the Breakdown of Lactose the Disaccharide Galactopyranosyl Glucose. 
    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. 
    9341   Beta Galactosidase Complex  A Protein Complex That Possesses Beta Galactosidase Activity I.e. Catalyzes the Hydrolysis of Terminal Non Reducing Beta D Galactose Residues in Beta D Galactosides. in E. Coli the Complex Is a Homotetramer; Dimeric and Hexameric Beta Galactosidase Complexes Have Been Observed in Other Species. 
    287   Magnesium Ion Binding  Interacting Selectively and Non Covalently with Magnesium (mg) Ions. 
    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. 
    4553   Hydrolase Activity Hydrolyzing O Glycosyl Compounds  Catalysis of the Hydrolysis of Any O Glycosyl Bond. 
    4565   Beta Galactosidase Activity  Catalysis of the Hydrolysis of Terminal Non Reducing Beta D Galactose Residues in Beta D Galactosides. 
    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. 
    16798   Hydrolase Activity Acting On Glycosyl Bonds  Catalysis of the Hydrolysis of Any Glycosyl Bond. 
    30246   Carbohydrate Binding  Interacting Selectively and Non Covalently with Any Carbohydrate Which Includes Monosaccharides Oligosaccharides and Polysaccharides As Well As Substances Derived From Monosaccharides by Reduction of the Carbonyl Group (alditols) by Oxidation of One or More Hydroxy Groups to Afford the Corresponding Aldehydes Ketones or Carboxylic Acids or by Replacement of One or More Hydroxy Group(s) by a Hydrogen Atom. Cyclitols Are Generally Not Regarded As Carbohydrates. 
    31420   Alkali Metal Ion Binding  Interacting Selectively and Non Covalently with Any Alkali Metal Ion; Alkali Metals Are Those Elements in Group Ia of the Periodic Table with the Exception of Hydrogen. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain A,B,C,D
    Scientific Name Escherichia coli  
    Genus Escherichia
    Gene lacz
    Host Scientific Name Escherichia coli  
    Host Genus Escherichia
    Host Strain Jm109
    Host Vector Type Plasmid
    Host Plasmid Name pET15B