Render Target: SSR
Render Timestamp: 2025-03-21T20:15:44.254Z
Commit: 779953b12a5930618aae6aca7c87fb286faeb1d7
XML generation date: 2025-03-07 13:06:12.476
Product last modified at: 2024-05-30T07:14:37.473Z
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PDP - Template Name: Polyclonal Antibody
PDP - Template ID: *******59c6464

Phospho-Tau (Ser400/Thr403/Ser404) Antibody #11837

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Inquiry Info. # 11837

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    Supporting Data

    REACTIVITY H M R
    SENSITIVITY Endogenous
    MW (kDa) 50-80
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 
    • R-Rat 

    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-Tau (Ser400/Thr403/Ser404) Antibody recognizes endogenous levels of tau protein when phosphorylated at Ser400 or Thr403 or Ser404. This antibody also detects dual phosphorylation at Ser400/Thr403, Ser400/Ser404, or Thr403/Ser404, and triple phosphorylation at Ser400/Thr403/Ser404.

    Species Reactivity:

    Human, Mouse, Rat

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser400/Thr403/Ser404 of human tau protein. Antibodies are purified by protein A and peptide affinity chromatography.

    Background

    Tau is a heterogeneous microtubule-associated protein that promotes and stabilizes microtubule assembly, especially in axons. Six isoforms with different amino-terminal inserts and different numbers of tandem repeats near the carboxy terminus have been identified, and tau is hyperphosphorylated at approximately 25 sites by Erk, glycogen synthase kinase-3 (GSK-3), and CDK5 (1,2). Phosphorylation decreases the ability of tau to bind to microtubules. Neurofibrillary tangles are a major hallmark of Alzheimer's disease (AD); these tangles are bundles of paired helical filaments (PHFs) composed of hyperphosphorylated tau. In particular, phosphorylation at Ser396 by GSK-3 or CDK5 destabilizes microtubules. Furthermore, research studies have shown that inclusions of tau are found in a number of other neurodegenerative diseases, collectively known as tauopathies (1,3).

    Investigators have shown that tau phosphorylation at Ser404 destabilizes microtubules and that tau is hyperphosphorylated at Ser404 in Alzheimer's disease (4-7).
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