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THREE-DIMENSIONAL STRUCTURE OF THE COMPLEX BETWEEN PANCREATIC SECRETORY INHIBITOR (KAZAL TYPE) AND TRYPSINOGEN AT 1.8 ANGSTROMS RESOLUTION. STRUCTURE SOLUTION, CRYSTALLOGRAPHIC REFINEMENT AND PRELIMINARY STRUCTURAL INTERPRETATION
Biology and Chemistry Report
1TGS
  •   Structure Details   Hide

    Structure Keywords

    Keywords COMPLEX (PROTEINASE/INHIBITOR)
    Text COMPLEX (PROTEINASE-INHIBITOR), COMPLEX (PROTEINASE-INHIBITOR) complex

    Polymeric Molecules

    Chain Z
    Description TRYPSINOGEN 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 24013.1 
    Source Method genetically manipulated  
    Chain I
    Description PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL TYPE) 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 6028.9 
    Source Method genetically manipulated  

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    CA  CALCIUM ION  Ca   40.08  View 
    SO4  SULFATE ION  O4 S   96.06  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    I ISK1_PIG P00998     
    Z TRY1_BOVIN P00760     

    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)
    3.4.21.4        
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain I
    GO ID   Ontology GO Term Definition
    10466   Negative Regulation of Peptidase Activity  Any Process That Stops or Reduces the Rate of Peptidase Activity the Hydrolysis of Peptide Bonds Within Proteins. 
    10751   Negative Regulation of Nitric Oxide Mediated Signal Transduction  Any Process That Decreases the Rate Frequency or Extent of Nitric Oxide Mediated Signal Transduction. Nitric Oxide Mediated Signal Transduction Is a Series of Molecular Signals Mediated by the Detection of Nitric Oxide (no). 
    50732   Negative Regulation of Peptidyl Tyrosine Phosphorylation  Any Process That Stops Prevents or Reduces the Frequency Rate or Extent of the Phosphorylation of Peptidyl Tyrosine. 
    60046   Regulation of Acrosome Reaction  Any Process That Modulates the Frequency Rate or Extent of the Acrosome Reaction. 
    90281   Negative Regulation of Calcium Ion Import  Any Process That Decreases the Rate Frequency or Extent of the Directed Movement of Calcium Ions Into a Cell or Organelle. 
    1900004   Negative Regulation of Serine Type Endopeptidase Activity  Any Process That Stops Prevents or Reduces the Frequency Rate or Extent of Serine Type Endopeptidase Activity. 
    2001256   Regulation of Store Operated Calcium Entry  Any Process That Modulates the Frequency Rate or Extent of Store Operated Calcium Entry. 
    5576   Extracellular Region  The Space External to the Outermost Structure of a Cell. For Cells Without External Protective or External Encapsulating Structures This Refers to Space Outside of the Plasma Membrane. This Term Covers the Host Cell Environment Outside an Intracellular Parasite. 
    5615   Extracellular Space  That Part of a Multicellular Organism Outside the Cells Proper Usually Taken to Be Outside the Plasma Membranes and Occupied by Fluid. 
    70062   Extracellular Exosome  A Membrane Bounded Vesicle That Is Released Into the Extracellular Region by Fusion of the Limiting Endosomal Membrane of a Multivesicular Body with the Plasma Membrane. 
    4867   Serine Type Endopeptidase Inhibitor Activity  Stops Prevents or Reduces the Activity of Serine Type Endopeptidases Enzymes That Catalyze the Hydrolysis of Nonterminal Peptide Bonds in a Polypeptide Chain; a Serine Residue (and a Histidine Residue) Are At the Active Center of the Enzyme. 
    30414   Peptidase Inhibitor Activity  Stops Prevents or Reduces the Activity of a Peptidase Any Enzyme That Catalyzes the Hydrolysis Peptide Bonds. 
    Chain Z
    GO ID   Ontology GO Term Definition
    6508   Proteolysis  The Hydrolysis of Proteins Into Smaller Polypeptides And/or Amino Acids by Cleavage of Their Peptide Bonds. 
    7586   Digestion  The Whole of the Physical Chemical and Biochemical Processes Carried Out by Multicellular Organisms to Break Down Ingested Nutrients Into Components That May Be Easily Absorbed and Directed Into Metabolism. 
    5576   Extracellular Region  The Space External to the Outermost Structure of a Cell. For Cells Without External Protective or External Encapsulating Structures This Refers to Space Outside of the Plasma Membrane. This Term Covers the Host Cell Environment Outside an Intracellular Parasite. 
    5615   Extracellular Space  That Part of a Multicellular Organism Outside the Cells Proper Usually Taken to Be Outside the Plasma Membranes and Occupied by Fluid. 
    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. 
    4252   Serine Type Endopeptidase Activity  Catalysis of the Hydrolysis of Internal Alpha Peptide Bonds in a Polypeptide Chain by a Catalytic Mechanism That Involves a Catalytic Triad Consisting of a Serine Nucleophile That Is Activated by a Proton Relay Involving an Acidic Residue (e.g. Aspartate or Glutamate) and a Basic Residue (usually Histidine). 
    5515   Protein Binding  Interacting Selectively and Non Covalently with Any Protein or Protein Complex (a Complex of Two or More Proteins That May Include Other Nonprotein Molecules). 
    8233   Peptidase Activity  Catalysis of the Hydrolysis of a Peptide Bond. a Peptide Bond Is a Covalent Bond Formed When the Carbon Atom From the Carboxyl Group of One Amino Acid Shares Electrons with the Nitrogen Atom From the Amino Group of a Second Amino Acid. 
    8236   Serine Type Peptidase Activity  Catalysis of the Hydrolysis of Peptide Bonds in a Polypeptide Chain by a Catalytic Mechanism That Involves a Catalytic Triad Consisting of a Serine Nucleophile That Is Activated by a Proton Relay Involving an Acidic Residue (e.g. Aspartate or Glutamate) and a Basic Residue (usually Histidine). 
    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. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain I
    Common Name Pig
    Scientific Name Sus scrofa  
    Genus Sus


    Chain Z
    Common Name Cattle
    Scientific Name Bos taurus  
    Genus Bos
    Organ Pancreas


    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    4 - 780933     cationic trypsin LOC780933