Render Target: STATIC
Render Timestamp: 2024-12-20T11:55:08.483Z
Commit: f2d32940205a64f990b886d724ccee2c9935daff
XML generation date: 2024-09-30 01:54:15.024
Product last modified at: 2024-12-17T18:49:01.738Z
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PDP - Template Name: Monoclonal Antibody
PDP - Template ID: *******c5e4b77
R Recombinant
Recombinant: Superior lot-to-lot consistency, continuous supply, and animal-free manufacturing.

PTPN22 (D6D1H) Rabbit mAb #14693

Filter:
  • WB
  • IP

    Supporting Data

    REACTIVITY H M
    SENSITIVITY Endogenous
    MW (kDa) 98
    Source/Isotype Rabbit IgG
    Application Key:
    • WB-Western Blotting 
    • IP-Immunoprecipitation 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:100

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    PTPN22 (D6D1H) Rabbit mAb recognizes endogenous levels of total PTPN22 protein.

    Species Reactivity:

    Human, Mouse

    Source / Purification

    Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro451 of human PTPN22 protein.

    Background

    PTPN22 (Lyp/PEP) is a cytoplasmic phosphatase expressed by hematopoietic cells (1,2). PTPN22 associates with the tyrosine kinase Csk to inhibit T cell receptor signaling through inactivation of Src kinases (3,4). Csk phosphorylates Src kinases on an inhibitory tyrosine, while PTPN22 dephosphorylates an activating site (4). PTPN22(-/-) mice have higher levels of activated Lck than wild-type, resulting in greater T cell expansion and increased serum antibody levels (5). Research studies have shown that a single-nucleotide polymorphism, 1858T of the PTPN22 gene which encodes the amino acid substitution R620W, confers increased risk for multiple autoimmune diseases including type I diabetes, rheumatoid arthritis, systemic lupus erythematosus, and Graves disease (6-9). Interestingly, although the R620W substitution disrupts the interaction between Csk and PTPN22, it is actually a gain-of-function mutation resulting in increased phosphatase activity (6,10,11). Recent evidence suggests that the autoimmune phenotype associated with the R620W variant is the result of increased calpain-mediated degradation and decreased protein levels of PTPN22 (12).
    For Research Use Only. Not For Use In Diagnostic Procedures.
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