Anti-Huntingtin (phospho S421) antibody (ab118827)


  • Product nameAnti-Huntingtin (phospho S421) antibody
    See all Huntingtin primary antibodies
  • Description
    Rabbit polyclonal to Huntingtin (phospho S421)
  • Specificityab118827 is specific to Huntingtin phosphorylated at Ser421.
  • Tested applicationsSuitable for: WB, ELISA, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat
  • Immunogen

    Synthetic peptide:


    conjugated to KLH, corresponding to amino acids 416-424 of Human Huntingtin phosphorylated at Ser421 (NP_002102.4).

  • Positive control
    • Human brain, cerebellum tissue.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid repeated freeze / thaw cycles.
  • Storage bufferpH: 7.20
    Preservative: 0.01% Sodium azide
    Constituents: 0.27% Potassium phosphate, 0.88% Sodium chloride
  • Concentration information loading...
  • PurityProtein A purified
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab118827 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB 1/500 - 1/3000. Predicted molecular weight: 348 kDa.
ELISA 1/10000 - 1/40000.
IHC-P Use a concentration of 10 - 20 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.


  • FunctionMay play a role in microtubule-mediated transport or vesicle function.
  • Tissue specificityExpressed in the brain cortex (at protein level). Widely expressed with the highest level of expression in the brain (nerve fibers, varicosities, and nerve endings). In the brain, the regions where it can be mainly found are the cerebellar cortex, the neocortex, the striatum, and the hippocampal formation.
  • Involvement in diseaseDefects in HTT are the cause of Huntington disease (HD) [MIM:143100]. HD is an autosomal dominant neurodegenerative disorder characterized by involuntary movements (chorea), general motor impairment, psychiatric disorders and dementia. Onset of the disease occurs usually in the third or fourth decade of life and symptoms progressively worsen leading to death in 10 to 20 years. Onset and clinical course depend on the degree of poly-Gln repeat expansion, longer expansions resulting in earlier onset and more severe clinical manifestations. HD affects 1 in 10,000 individuals of European origin. Neuropathology of Huntington disease displays a distinctive pattern with loss of neurons, especially in the caudate and putamen (striatum).
  • Sequence similaritiesBelongs to the huntingtin family.
    Contains 10 HEAT repeats.
  • DomainThe N-terminal Gln-rich and Pro-rich domain has great conformational flexibility and is likely to exist in a fluctuating equilibrium of alpha-helical, random coil, and extended conformations.
  • Post-translational
    Cleaved by apopain downstream of the polyglutamine stretch. The resulting N-terminal fragment is cytotoxic and provokes apoptosis.
    Forms with expanded polyglutamine expansion are specifically ubiquitinated by SYVN1, which promotes their proteasomal degradation.
  • Cellular localizationCytoplasm. Nucleus. The mutant Huntingtin protein colocalizes with AKAP8L in the nuclear matrix of Huntington's disease neurons.
  • Information by UniProt
  • Database links
  • Alternative names
    • AI256365 antibody
    • C430023I11Rik antibody
    • HD antibody
    • HD protein antibody
    • HD_HUMAN antibody
    • HDH antibody
    • HTT antibody
    • Huntingtin antibody
    • HUNTINGTON CHOREA antibody
    • Huntington disease protein antibody
    • Huntington's disease protein homolog antibody
    • IT 15 antibody
    • IT15 antibody
    • OTTMUSP00000026909 antibody
    • ZHD antibody
    see all

Anti-Huntingtin (phospho S421) antibody images

  • ab118827, at 10-20 µg/ml, staining Huntingtin (phospho S421) in formalin fixed, paraffin embedded Human brain cerebellum tissue by Immunohistochemistry followed by biotinylated secondary antibody, alkaline phosphatase-streptavidin and chromogen.

References for Anti-Huntingtin (phospho S421) antibody (ab118827)

ab118827 has not yet been referenced specifically in any publications.

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