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Calcium-calmodulin complexed with the calmodulin binding domain from a small conductance potassium channel splice variant and NS309
Biology and Chemistry Report
4J9Z
  •   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
    1KP  (3E)-6,7-dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-one  C8 H4 Cl2 N2 O2   231.04  View 
    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 P02593     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    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 Gene Products and Protein Complexes That Have Some Part That Penetrates At Least One Leaflet of the Membrane Bilayer. This Component Includes Gene Products That Are Buried in the Bilayer with No Exposure Outside the Bilayer. 
    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  Catalysis of 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  Catalysis of 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. 
    2027   Regulation of Heart Rate  Any Process That Modulates the Frequency or Rate of Heart Contraction. 
    5513   Detection of Calcium Ion  The Series of Events in Which a Calcium Ion Stimulus Is Received by a Cell and Converted Into a Molecular Signal. 
    7190   Activation of Adenylate Cyclase Activity  Any Process That Initiates the Activity of the Inactive Enzyme Adenylate Cyclase. 
    10880   Regulation of Release of Sequestered Calcium Ion Into Cytosol by Sarcoplasmic Reticulum  Any Process That Modulates the Rate Frequency or Extent of Release of Sequestered Calcium Ion Into Cytosol by the Sarcoplasmic Reticulum the Process in Which the Release of Sequestered Calcium Ion by Sarcoplasmic Reticulum Into Cytosol Occurs Via Calcium Release Channels. 
    19722   Calcium Mediated Signaling  Any Intracellular Signal Transduction in Which the Signal Is Passed On Within the Cell Via Calcium Ions. 
    21762   Substantia Nigra Development  The Progression of the Substantia Nigra Over Time From Its Initial Formation Until Its Mature State. the Substantia Nigra Is the Layer of Gray Substance That Separates the Posterior Parts of the Cerebral Peduncles (tegmentum Mesencephali) From the Anterior Parts; It Normally Includes a Posterior Compact Part with Many Pigmented Cells (pars Compacta) and an Anterior Reticular Part Whose Cells Contain Little Pigment (pars Reticularis). 
    30801   Positive Regulation of Cyclic Nucleotide Metabolic Process  Any Process That Activates or Increases the Frequency Rate or Extent of the Chemical Reactions and Pathways Involving Cyclic Nucleotides. 
    32465   Regulation of Cytokinesis  Any Process That Modulates the Frequency Rate or Extent of the Division of the Cytoplasm of a Cell and Its Separation Into Two Daughter Cells. 
    32516   Positive Regulation of Phosphoprotein Phosphatase Activity  Any Process That Activates or Increases the Activity of a Phosphoprotein Phosphatase. 
    35307   Positive Regulation of Protein Dephosphorylation  Any Process That Activates or Increases the Frequency Rate or Extent of Removal of Phosphate Groups From a Protein. 
    51000   Positive Regulation of Nitric Oxide Synthase Activity  Any Process That Activates or Increases the Activity of the Enzyme Nitric Oxide Synthase. 
    51343   Positive Regulation of Cyclic Nucleotide Phosphodiesterase Activity  Any Process That Activates or Increases the Frequency Rate or Extent of Cyclic Nucleotide Phosphodiesterase Activity the Catalysis of the Reaction: Nucleotide 3' 5' Cyclic Phosphate + H2o = Nucleotide 5' Phosphate. 
    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. 
    51592   Response to Calcium Ion  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 Calcium Ion Stimulus. 
    55117   Regulation of Cardiac Muscle Contraction  Any Process That Modulates the Frequency Rate or Extent of Cardiac Muscle Contraction. 
    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. 
    60316   Positive Regulation of Ryanodine Sensitive Calcium Release Channel Activity  Any Process That Increases 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. 
    5654   Nucleoplasm  That Part of the Nuclear Content Other Than the Chromosomes or the Nucleolus. 
    5737   Cytoplasm  All of the Contents of a Cell Excluding the Plasma Membrane and Nucleus But Including Other Subcellular Structures. 
    5813   Centrosome  A Structure Comprised of a Core Structure (in Most Organisms a Pair of Centrioles) and Peripheral Material From Which a Microtubule Based Structure Such As a Spindle Apparatus Is Organized. Centrosomes Occur Close to the Nucleus During Interphase in Many Eukaryotic Cells Though in Animal Cells It Changes Continually During the Cell Division Cycle. 
    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. 
    5876   Spindle Microtubule  Any Microtubule That Is Part of a Mitotic or Meiotic Spindle; Anchored At One Spindle Pole. 
    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. 
    30017   Sarcomere  The Repeating Unit of a Myofibril in a Muscle Cell Composed of an Array of Overlapping Thick and Thin Filaments Between Two Adjacent Z Discs. 
    30426   Growth Cone  The Migrating Motile Tip of a Growing Nerve Cell Axon or Dendrite. 
    34704   Calcium Channel Complex  An Ion Channel Complex Through Which Calcium Ions Pass. 
    43005   Neuron Projection  A Prolongation or Process Extending From a Nerve Cell E.g. an Axon or Dendrite. 
    70062   Extracellular Vesicular 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. 
    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. 
    31432   Titin Binding  Interacting Selectively and Non Covalently with Titin Any of a Family of Giant Proteins Found in Striated and Smooth Muscle. in Striated Muscle Single Titin Molecules Span Half the Sarcomere with Their N and C Termini in the Z Disc and M Line Respectively. 
    31800   Type 3 Metabotropic Glutamate Receptor Binding  Interacting Selectively and Non Covalently with a Type 3 Metabotropic Glutamate Receptor. 
    31996   Thioesterase Binding  Interacting Selectively and Non Covalently with Any Thioesterase Enzyme. 
    31997   N Terminal Myristoylation Domain Binding  Interacting Selectively and Non Covalently with the N Terminus of a Protein That Has the Potential to Be or Has Been Modified by N Terminal Myristoylation. Binding Affinity Is Typically Altered by Myristoylation; For Example N Terminal Myristoylation of Hiv Nef Increases Its Affinity For Calmodulin. 
    43274   Phospholipase Binding  Interacting Selectively and Non Covalently with Any Phospholipase Enzymes That Catalyze of the Hydrolysis of a Glycerophospholipid. 
    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. 
    72542   Protein Phosphatase Activator Activity  Increases the Activity of a Protein Phosphatase an Enzyme Which Catalyzes of the Removal of a Phosphate Group From a Protein Substrate Molecule. 


     
  •   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 intermediate/small conductance calcium-activated channel, subfamily N, member 2 KCNN2