Render Target: SSR
Render Timestamp: 2024-12-19T21:36:22.982Z
Commit: f2d32940205a64f990b886d724ccee2c9935daff
XML generation date: 2024-08-01 15:26:33.847
Product last modified at: 2024-12-17T19:04:55.935Z
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PDP - Template Name: Polyclonal Antibody
PDP - Template ID: *******59c6464

Phospho-SQSTM1/p62 (Ser349) Antibody #95697

Filter:
  • WB

    Supporting Data

    REACTIVITY H M
    SENSITIVITY Endogenous
    MW (kDa) 62
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000

    Storage

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

    Protocol

    Specificity / Sensitivity

    Phospho-SQSTM1/p62 (Ser349) Antibody recognizes endogenous levels of SQSTM1/p62 protein only when phosphorylated at Ser349.

    Species Reactivity:

    Human, Mouse

    The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.

    Species predicted to react based on 100% sequence homology:

    Rat

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser349 of human SQSTM1/p62 protein. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    Sequestosome 1 (SQSTM1, p62) is a ubiquitin binding protein involved in cell signaling, oxidative stress, and autophagy (1-4). It was first identified as a protein that binds to the SH2 domain of p56Lck (5) and independently found to interact with PKCζ (6,7). SQSTM1 was subsequently found to interact with ubiquitin, providing a scaffold for several signaling proteins and triggering degradation of proteins through the proteasome or lysosome (8). Interaction between SQSTM1 and TRAF6 leads to the K63-linked polyubiquitination of TRAF6 and subsequent activation of the NF-κB pathway (9). Protein aggregates formed by SQSTM1 can be degraded by the autophagosome (4,10,11). SQSTM1 binds autophagosomal membrane protein LC3/Atg8, bringing SQSTM1-containing protein aggregates to the autophagosome (12). Lysosomal degradation of autophagosomes leads to a decrease in SQSTM1 levels during autophagy; conversely, autophagy inhibitors stabilize SQSTM1 levels. Studies have demonstrated a link between SQSTM1 and oxidative stress. SQSTM1 interacts with KEAP1, which is a cytoplasmic inhibitor of NRF2, a key transcription factor involved in cellular responses to oxidative stress (3). Thus, accumulation of SQSTM1 can lead to an increase in NRF2 activity.
    Phosphorylation of SQSTM1 at Ser349 (Ser351 in mouse) during oxidative stress increases its binding to KEAP1, thereby increasing NRF2 activity (13).
    For Research Use Only. Not For Use In Diagnostic Procedures.
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