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An Information Portal to 105025 Biological Macromolecular Structures

Comparing skeletal and cardiac calsequestrin structures and their calcium binding: a proposed mechanism for coupled calcium binding and protein polymerization
Biology and Chemistry Report
1SJI
  •   Structure Details   Hide

    Structure Keywords

    Keywords METAL BINDING PROTEIN
    Text calsequestrin, Glycoprotein, Calcium-binding, Muscle protein, METAL BINDING PROTEIN

    Polymeric Molecules

    Chain A,B
    Description Calsequestrin, cardiac muscle isoform 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 40746.4 
    Source Method genetically manipulated  
    Entity Name Calsequestrin 2 

     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,B CASQ2_CANFA P12637     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    2027   Regulation of Heart Rate  Any Process That Modulates the Frequency or Rate of Heart Contraction. 
    10649   Regulation of Cell Communication by Electrical Coupling  Any Process That Modulates the Frequency Rate or Extent of Cell Communication Via Electrical Coupling. Cell Communication Via Electrical Coupling Is the Process That Mediates Signaling Interactions Between One Cell and Another Cell by Transfer of Current Between Their Adjacent Cytoplasms Via Intercellular Protein Channels. 
    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. 
    10881   Regulation of Cardiac Muscle Contraction by Regulation of the Release of Sequestered Calcium Ion  Any Process That Modulates the Frequency Rate or Extent of Cardiac Muscle Contraction Via the Regulation of the Release of Sequestered Calcium Ion by Sarcoplasmic Reticulum Into Cytosol. the Sarcoplasmic Reticulum Is the Endoplasmic Reticulum of Striated Muscle Specialised For the Sequestration of Calcium Ions That Are Released Upon Receipt of a Signal Relayed by the T Tubules From the Neuromuscular Junction. 
    43267   Negative Regulation of Potassium Ion Transport  Any Process That Stops Prevents or Reduces the Frequency Rate or Extent of 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. 
    51208   Sequestering of Calcium Ion  The Process of Binding or Confining Calcium Ions Such That They Are Separated From Other Components of a Biological System. 
    51258   Protein Polymerization  The Process of Creating Protein Polymers Compounds Composed of a Large Number of Component Monomers; Polymeric Proteins May Be Made Up of Different or Identical Monomers. Polymerization Occurs by the Addition of Extra Monomers to an Existing Poly or Oligomeric Protein. 
    60048   Cardiac Muscle Contraction  Muscle Contraction of Cardiac Muscle Tissue. 
    60306   Regulation of Membrane Repolarization  Any Process That Modulates the Establishment or Extent of a Membrane Potential in the Polarizing Direction Towards the Resting Potential Usually From Positive to Negative. 
    60315   Negative Regulation of Ryanodine Sensitive Calcium Release Channel Activity  Any Process That Decreases 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. 
    71313   Cellular Response to Caffeine  Any Process That Results in a Change in State or Activity of a Cell (in Terms of Movement Secretion Enzyme Production Gene Expression Etc.) As a Result of a Caffeine Stimulus. Caffeine Is an Alkaloid Found in Numerous Plant Species Where It Acts As a Natural Pesticide That Paralyzes and Kills Certain Insects Feeding Upon Them. 
    1901017   Negative Regulation of Potassium Ion Transmembrane Transporter Activity  Any Process That Stops Prevents or Reduces the Frequency Rate or Extent of Potassium Ion Transmembrane Transporter Activity. 
    5622   Intracellular  The Living Contents of a Cell; the Matter Contained Within (but Not Including) the Plasma Membrane Usually Taken to Exclude Large Vacuoles and Masses of Secretory or Ingested Material. in Eukaryotes It Includes the Nucleus and Cytoplasm. 
    5737   Cytoplasm  All of the Contents of a Cell Excluding the Plasma Membrane and Nucleus But Including Other Subcellular Structures. 
    5891   Voltage Gated Calcium Channel Complex  A Protein Complex That Forms a Transmembrane Channel Through Which Calcium Ions May Pass in Response to Changes in Membrane Potential. 
    16529   Sarcoplasmic Reticulum  A Fine Reticular Network of Membrane Limited Elements That Pervades the Sarcoplasm of a Muscle Cell; Continuous Over Large Portions of the Cell and with the Nuclear Envelope; That Part of the Endoplasmic Reticulum Specialized For Calcium Release Uptake and Storage. 
    30018   Z Disc  Platelike Region of a Muscle Sarcomere to Which the Plus Ends of Actin Filaments Are Attached. 
    33018   Sarcoplasmic Reticulum Lumen  The Volume Enclosed by the Membranes of the Sarcoplasmic Reticulum. 
    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). 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain A,B
    Common Name Dog
    Scientific Name Canis lupus familiaris  
    Genus Canis
    Species Canis Lupus
    Strain FAMILIARIS
    Gene casq2
    Host Scientific Name Escherichia coli  
    Host Genus Escherichia
    Host Vector Type Plasmid
    Host Plasmid Name pTYB1


    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    17 - 483134     calsequestrin 2 (cardiac muscle) CASQ2