Render Target: SSR
Render Timestamp:
4/5/2025, 4:39:30 PM EDT
4/5/2025, 8:39:30 PM UTC
Commit: c91f970ca8df4f527662a05c7bd6e4d03c6fa173
XML generation date: 2025-03-07 13:10:25.259
Product last modified at: 2024-09-13T07:01:21.354Z
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PDP - Template Name: Polyclonal Antibody
PDP - Template ID: *******59c6464

Phospho-Tau (Thr181) Antibody #5383

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Inquiry Info. # 5383

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    Supporting Data

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

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000
    Immunoprecipitation 1:50

    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 (Thr181) Antibody recognizes endogenous levels of Tau protein only when phosphorylated at Thr181.

    Species Reactivity:

    Human, Mouse, Rat

    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:

    Monkey

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Thr181 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).

    The cerebrospinal fluid concentration of Tau phosphorylated at Thr181 has been proposed to be a biomarker for the study of neurodegenerative disorders (4).
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