Crystal structure of R336A mutant of cAMP-dependent protein kinase with unphosphorylated turn motif.
Biology and Chemistry Report
  •   Structure Details   Hide

    Structure Keywords

    Text Protein kinase, phosphotransferase, Serine/threonine protein kinase, regulatory subunit, PKI, phosphorylation, TRANSFERASE-TRANSFERASE INHIBITOR complex

    Polymeric Molecules

    Chain E
    Description cAMP-dependent protein kinase catalytic subunit alpha 
    Mutation R336A 
    Nonstandard Linkage no 
    Nonstandard Monomers yes 
    Polymer Type polypeptide(L) 
    Formula Weight 42874.2 
    Source Method genetically manipulated  
    Entity Name PKA C-alpha 
    Chain A
    Description cAMP-dependent protein kinase inhibitor alpha 
    Fragment UNP Residues 6-25 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 2226.4 
    Source Method synthetic  
    Entity Name PKI-alpha, cAMP-dependent protein kinase inhibitor, muscle/brain isoform 

    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 IPKA_MOUSE P27776     
    E KAPCA_MOUSE P05132     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain E
    GO ID   Ontology GO Term Definition
    16310   Phosphorylation  The Process of Introducing a Phosphate Group Into a Molecule Usually with the Formation of a Phosphoric Ester a Phosphoric Anhydride or a Phosphoric Amide. 
    5634   Nucleus  A Membrane Bounded Organelle of Eukaryotic Cells in Which Chromosomes Are Housed and Replicated. in Most Cells the Nucleus Contains All of the Cell's Chromosomes Except the Organellar Chromosomes and Is the Site of RNA Synthesis and Processing. in Some Species or in Specialized Cell Types RNA Metabolism or DNA Replication May Be Absent. 
    5737   Cytoplasm  All of the Contents of a Cell Excluding the Plasma Membrane and Nucleus But Including Other Subcellular Structures. 
    5739   Mitochondrion  A Semiautonomous Self Replicating Organelle That Occurs in Varying Numbers Shapes and Sizes in the Cytoplasm of Virtually All Eukaryotic Cells. It Is Notably the Site of Tissue Respiration. 
    5886   Plasma Membrane  The Membrane Surrounding a Cell That Separates the Cell From Its External Environment. It Consists of a Phospholipid Bilayer and Associated Proteins. 
    5929   Cilium  A Specialized Eukaryotic Organelle That Consists of a Filiform Extrusion of the Cell Surface and of Some Cytoplasmic Parts. Each Cilium Is Largely Bounded by an Extrusion of the Cytoplasmic (plasma) Membrane and Contains a Regular Longitudinal Array of Microtubules Anchored to a Basal Body. 
    16020   Membrane  Double Layer of Lipid Molecules That Encloses All Cells and in Eukaryotes Many Organelles; May Be a Single or Double Lipid Bilayer; Also Includes Associated Proteins. 
    42995   Cell Projection  A Prolongation or Process Extending From a Cell E.g. a Flagellum or Axon. 
    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. 
    4674   Protein Serine/threonine Kinase Activity  Catalysis of the Reactions: ATP + Protein Serine = Adp + Protein Serine Phosphate and ATP + Protein Threonine = Adp + Protein Threonine Phosphate. 
    4712   Protein Serine/threonine/tyrosine Kinase Activity  Catalysis of the Reactions: ATP + a Protein Serine = Adp + Protein Serine Phosphate; ATP + a Protein Threonine = Adp + Protein Threonine Phosphate; and ATP + a Protein Tyrosine = Adp + Protein Tyrosine Phosphate. 
    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). 
    5524   ATP Binding  Interacting Selectively and Non Covalently with ATP Adenosine 5' Triphosphate a Universally Important Coenzyme and Enzyme Regulator. 
    16301   Kinase Activity  Catalysis of the Transfer of a Phosphate Group Usually From ATP to a Substrate Molecule. 
    16740   Transferase Activity  Catalysis of the Transfer of a Group E.g. a Methyl Group Glycosyl Group Acyl Group Phosphorus Containing or Other Groups From One Compound (generally Regarded As the Donor) to Another Compound (generally Regarded As the Acceptor). Transferase Is the Systematic Name For Any Enzyme of EC Class 2. 

  •   Gene Details   Hide

    Genetic Source

    Chain E
    Common Name Mouse
    Scientific Name Mus musculus  
    Gene prkaca, pkaca
    Host Scientific Name Escherichia coli  

    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    3 3 A1|3 18767     protein kinase inhibitor, alpha PKIA    
    8 8|8 C3 18747     protein kinase, cAMP dependent, catalytic, alpha PRKACA