POP-OUT | CLOSE

An Information Portal to 110790 Biological Macromolecular Structures

Calcium-calmodulin complexed with the calmodulin binding domain from a small conductance potassium channel splice variant
Biology and Chemistry Report
4J9Y
  •   Structure Details   Hide

    Structure Keywords

    Keywords TRANSPORT PROTEIN/CALCIUM BINDING
    Text Calcium binding, EF hand, SK2a channel fragment, TRANSPORT PROTEIN-CALCIUM BINDING complex

    Polymeric Molecules

    Chain B
    Description Small conductance calcium-activated potassium channel protein 2 
    Fragment Calmodulin Binding Domain (UNP residues 396-487) 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 12243.5 
    Source Method genetically manipulated  
    Entity Name SK2a, SK2, SKCa 2, SKCa2, KCa2.2 
    Chain R
    Description Calmodulin 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 16852.7 
    Source Method genetically manipulated  
    Entity Name CaM 

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    CA  CALCIUM ION  Ca   40.08  View 
    GOL  GLYCEROL  C3 H8 O3   92.09  View 
    SO4  SULFATE ION  O4 S   96.06  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    B KCNN2_RAT P70604     
    R CALM_RAT P62161     

    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain B
    GO ID   Ontology GO Term Definition
    6813   Potassium Ion Transport  The Directed Movement of Potassium Ions (k+) Into Out of or Within a Cell or Between Cells by Means of Some Agent Such As a Transporter or Pore. 
    16021   Integral Component of Membrane  The Component of a Membrane Consisting of the Gene Products and Protein Complexes Having At Least Some Part of Their Peptide Sequence Embedded in the Hydrophobic Region of the Membrane. 
    5516   Calmodulin Binding  Interacting Selectively and Non Covalently with Calmodulin a Calcium Binding Protein with Many Roles Both in the Calcium Bound and Calcium Free States. 
    15269   Calcium Activated Potassium Channel Activity  Enables the Calcium Concentration Regulatable Energy Independent Passage of Potassium Ions Across a Lipid Bilayer Down a Concentration Gradient. 
    16286   Small Conductance Calcium Activated Potassium Channel Activity  Enables the Transmembrane Transfer of Potassium by a Channel with a Unit Conductance of 2 to 20 Picosiemens That Opens in Response to Stimulus by Internal Calcium Ions. Small Conductance Calcium Activated Potassium Channels Are More Sensitive to Calcium Than Are Large Conductance Calcium Activated Potassium Channels. Transport by a Channel Involves Catalysis of Facilitated Diffusion of a Solute (by an Energy Independent Process) Involving Passage Through a Transmembrane Aqueous Pore or Channel Without Evidence For a Carrier Mediated Mechanism. 
    Chain R
    GO ID   Ontology GO Term Definition
    1975   Response to Amphetamine  Any Process That Results in a Change in State or Activity of a Cell or an Organism (in Terms of Movement Secretion Enzyme Production Gene Expression Etc.) As a Result of an Amphetamine Stimulus. Amphetamines Consist of a Group of Compounds Related to Alpha Methylphenethylamine. 
    7190   Activation of Adenylate Cyclase Activity  Any Process That Initiates the Activity of the Inactive Enzyme Adenylate Cyclase. 
    19722   Calcium Mediated Signaling  Any Intracellular Signal Transduction in Which the Signal Is Passed On Within the Cell Via Calcium Ions. 
    51000   Positive Regulation of Nitric Oxide Synthase Activity  Any Process That Activates or Increases the Activity of the Enzyme Nitric Oxide Synthase. 
    51412   Response to Corticosterone  Any Process That Results in a Change in State or Activity of a Cell or an Organism (in Terms of Movement Secretion Enzyme Production Gene Expression Etc.) As a Result of a Corticosterone Stimulus. Corticosterone Is a 21 Carbon Steroid Hormone of the Corticosteroid Type Produced in the Cortex of the Adrenal Glands. in Many Species Corticosterone Is the Principal Glucocorticoid Involved in Regulation of Fuel Metabolism Immune Reactions and Stress Responses. 
    60314   Regulation of Ryanodine Sensitive Calcium Release Channel Activity  Any Process That Modulates the Activity of a Ryanodine Sensitive Calcium Release Channel. the Ryanodine Sensitive Calcium Release Channel Catalyzes the Transmembrane Transfer of a Calcium Ion by a Channel That Opens When a Ryanodine Class Ligand Has Been Bound by the Channel Complex or One of Its Constituent Parts. 
    1901339   Regulation of Store Operated Calcium Channel Activity  Any Process That Modulates the Frequency Rate or Extent of Store Operated Calcium Channel Activity. 
    1901841   Regulation of High Voltage Gated Calcium Channel Activity  Any Process That Modulates the Frequency Rate or Extent of High Voltage Gated Calcium Channel Activity. 
    922   Spindle Pole  Either of the Ends of a Spindle Where Spindle Microtubules Are Organized; Usually Contains a Microtubule Organizing Center and Accessory Molecules Spindle Microtubules and Astral Microtubules. 
    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. 
    5819   Spindle  The Array of Microtubules and Associated Molecules That Forms Between Opposite Poles of a Eukaryotic Cell During Mitosis or Meiosis and Serves to Move the Duplicated Chromosomes Apart. 
    5829   Cytosol  The Part of the Cytoplasm That Does Not Contain Organelles But Which Does Contain Other Particulate Matter Such As Protein Complexes. 
    5856   Cytoskeleton  Any of the Various Filamentous Elements That Form the Internal Framework of Cells and Typically Remain After Treatment of the Cells with Mild Detergent to Remove Membrane Constituents and Soluble Components of the Cytoplasm. the Term Embraces Intermediate Filaments Microfilaments Microtubules the Microtrabecular Lattice and Other Structures Characterized by a Polymeric Filamentous Nature and Long Range Order Within the Cell. the Various Elements of the Cytoskeleton Not Only Serve in the Maintenance of Cellular Shape But Also Have Roles in Other Cellular Functions Including Cellular Movement Cell Division Endocytosis and Movement of Organelles. 
    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. 
    30426   Growth Cone  The Migrating Motile Tip of a Growing Nerve Cell Axon or Dendrite. 
    43005   Neuron Projection  A Prolongation or Process Extending From a Nerve Cell E.g. an Axon or Dendrite. 
    5246   Calcium Channel Regulator Activity  Modulates the Activity of a Calcium Channel. 
    5509   Calcium Ion Binding  Interacting Selectively and Non Covalently with Calcium Ions (ca2+). 
    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). 
    8179   Adenylate Cyclase Binding  Interacting Selectively and Non Covalently with the Enzyme Adenylate Cyclase. 
    19904   Protein Domain Specific Binding  Interacting Selectively and Non Covalently with a Specific Domain of a Protein. 
    30234   Enzyme Regulator Activity  Binds to and Modulates the Activity of an Enzyme. 
    30235   Nitric Oxide Synthase Regulator Activity  Modulates the Activity of Nitric Oxide Synthase. 
    31800   Type 3 Metabotropic Glutamate Receptor Binding  Interacting Selectively and Non Covalently with a Type 3 Metabotropic Glutamate Receptor. 
    43548   Phosphatidylinositol 3 Kinase Binding  Interacting Selectively and Non Covalently with a Phosphatidylinositol 3 Kinase Any Enzyme That Catalyzes the Addition of a Phosphate Group to an Inositol Lipid At the 3' Position of the Inositol Ring. 
    44325   Ion Channel Binding  Interacting Selectively and Non Covalently with One or More Specific Sites On an Ion Channel a Protein Complex That Spans a Membrane and Forms a Water Filled Channel Across the Phospholipid Bilayer Allowing Selective Ion Transport Down Its Electrochemical Gradient. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 
    47485   Protein N Terminus Binding  Interacting Selectively and Non Covalently with a Protein N Terminus the End of Any Peptide Chain At Which the 2 Amino (or 2 Imino) Function of a Constituent Amino Acid Is Not Attached in Peptide Linkage to Another Amino Acid Residue. 
    48306   Calcium Dependent 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) in the Presence of Calcium. 
    50998   Nitric Oxide Synthase Binding  Interacting Selectively and Non Covalently with the Enzyme Nitric Oxide Synthase. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain R
    Common Name Rat
    Scientific Name Rattus norvegicus  
    Gene calm1, calm, cam, cam1, calm2, cam2, camb, calm3, cam3, camc
    Host Scientific Name Escherichia coli  


    Chain B
    Common Name Rat
    Scientific Name Rattus norvegicus  
    Gene kcnn2
    Host Scientific Name Escherichia coli  


    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    1 1q22 24244     calmodulin 3 CALM3    
    6 6q31-q32 24242     calmodulin 1 CALM1    
    6 6q11-q12 50663     calmodulin 2 CALM2    
    18 18q11 54262     potassium channel, calcium activated intermediate/small conductance subfamily N alpha, member 2 KCNN2