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    Phospholemman (PLM)

    Phospholemman (PLM)

    About Phospholemman

    The sodium pump is the principal means of active ion transport at the cell surface of most cell types. The minimum functional unit of the pump consists of the catalytic alpha subunit (mainly alpha1 and alpha2 in the heart), and a beta subunit (mainly beta1 in the heart) which is required for trafficking to the cell surface. Tissue-specific regulation of pump activity is achieved by expression of a third accessory subunit termed FXYD after a conserved extracellular motif.

    In the heart, FXYD1 (phospholemman, UniProtKB - O00168 (PLM_HUMAN)) regulates the pump by modifying its Na affinity and Vmax. Unphosphorylated phospholemman inhibits the pump, and phosphorylation by PKA or PKC relieves this inhibition. Phospholemman is phosphorylated by PKA at Ser68 and by PKC at Ser63, Ser68 and Thr69 (Ser69 in mouse). Ser63 and Ser68 of PLM are significantly phosphorylated 'at rest’ by PKC in ventricular myocytes. Badrilla offers antibodies to all of these phosphorylated forms.

    Who's active in the field?

    1. Will Fuller, University of Dundee, UK | More
    2. Joseph Y. Cheung, Temple University, US | More
    3. Michael Shattock, King's College London, UK | More
    4. Cathrine Rein Carlson, Institute for Experimental Medical Research, NO | More



     

    Phospholemman publications

    1. Development of high affinity peptides that prevent phospholemman (PLM) inhibition of the sodium-calcium exchanger 1 (NCX1). Biochem J. 2016 | PMID: 27247424
    2. Protein Phosphatase 1c Associated with the Cardiac Sodium Calcium Exchanger 1 Regulates Its Activity by Dephosphorylating Serine 68-phosphorylated Phospholemman. J Biol Chem. 2016 | PMID: 26668322
    3. Regulation of L-type calcium channel by phospholemman in cardiac myocytes. J Mol Cell Cardiol. 2015 | PMID: 25918050
    4. Cardiac hypertrophy in mice expressing unphosphorylatable phospholemman. Cardiovasc Res. 2014 | PMID: 25103111
    5. Induced overexpression of phospholemman S68E mutant improves cardiac contractility and mortality after ischemia-reperfusion. Am J Physiol Heart Circ Physiol. 2014 | PMID: 24486513

    Review article

    A recent review focusing on the regulation of the cardiac Na pump at the protein and enzyme level and regulation by its accessory protein phospholemman:

    Novel regulation of cardiac Na pump via phospholemman. J Mol Cell Cardiol. 2013 | Article

    4 Item(s)

    1. Phospholemman (PLM) (pSer63) pAb

      $325.00
      Product code: A010-110

      Sheep polyclonal antibody to serine63 phosphorylated form of phospholemman

      • Suitable for use in Western blot (1:2000 dilution)
      • Reacts with serine63 phosphorylated PLM in human, mouse, rat, rabbit
      • 200µL unit size

       

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    2. Phospholemman (PLM) (pSer68) pAb

      $325.00
      Product code: A010-111

      Sheep polyclonal antibody to serine68 phosphorylated form of phospholemman

      • Suitable for use in Western blot (1:2000 dilution)
      • Reacts with serine68 phosphorylated PLM in human, mouse, rat, rabbit
      • 200µL unit size

       

      Learn More
    3. Phospholemman (PLM) (pThr69) pAb

      $325.00
      Product code: A010-112

      Sheep polyclonal antibody to threonine69 phosphorylated form of phospholemman

      • Suitable for use in Western blot (1:2000 dilution)
      • Reacts with threonine69 phosphorylated PLM in human, mouse, rat, rabbit
      • 100µL unit size

       

      Learn More
    4. Phospholemman (PLM) (Ser68/pThr69) pAb

      $325.00
      Product code: A010-113

      Sheep polyclonal antibody to Ser68/pThr69 phosphorylated form of phospholemman

      • Suitable for use in Western blot (1:2000 dilution)
      • Reacts with Ser68/pThr69 phosphorylated PLM in human, mouse, rat, rabbit
      • 100µL unit size

       

      Learn More

    4 Item(s)

    Shop By
    Product type
    1. Antibody (4)
    Target
    1. Phospholemman (4)
    Phosphorylation site
    1. dual pSer/Thr 68/69 (1)
    2. pSer63 (1)
    3. pSer68 (1)
    4. Thr69 (1)
    Clonality
    1. pAb (4)
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    DISCLAIMER: Products for research use only (RUO) and are not intended for diagnostic or therapeutic use.

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