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

    Structure Keywords

    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     

    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,B
    GO ID   Ontology GO Term Definition
    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. 
    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. 
    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. 
    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
    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