Anti-HP1 alpha antibody [HP330A] (ab107100)


  • Product nameAnti-HP1 alpha antibody [HP330A]
    See all HP1 alpha primary antibodies
  • Description
    Rat monoclonal [HP330A] to HP1 alpha
  • Tested applicationsSuitable for: ELISA, WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Immunogen information is not available

  • Positive control
    • Human Tonsil tissue.



Our Abpromise guarantee covers the use of ab107100 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
ELISA 1/1000.
WB 1/2. Predicted molecular weight: 22 kDa.
IHC-P 1/20.


  • FunctionComponent of heterochromatin that recognizes and binds histone H3 tails methylated at 'Lys-9' (H3K9me), leading to epigenetic repression. In contrast, it is excluded from chromatin when 'Tyr-41' of histone H3 is phosphorylated (H3Y41ph). Can interact with lamin-B receptor (LBR). This interaction can contribute to the association of the heterochromatin with the inner nuclear membrane. Involved in the formation of functional kinetochore through interaction with MIS12 complex proteins.
  • Sequence similaritiesContains 2 chromo domains.
  • Post-translational
    Phosphorylation of HP1 and LBR may be responsible for some of the alterations in chromatin organization and nuclear structure which occur at various times during the cell cycle (By similarity). Phosphorylated during interphase and possibly hyper-phosphorylated during mitosis.
  • Cellular localizationNucleus. Chromosome. Chromosome > centromere. Component of centromeric and pericentromeric heterochromatin. Associates with chromosomes during mitosis. Associates specifically with chromatin during metaphase and anaphase.
  • Information by UniProt
  • Database links
  • Alternative names
    • Antigen p25 antibody
    • CBX5 antibody
    • CBX5_HUMAN antibody
    • CG8409 antibody
    • Chromobox 5 antibody
    • Chromobox homolog 5 (HP1 alpha homolog, Drosophila) antibody
    • Chromobox homolog 5 antibody
    • Chromobox protein homolog 5 antibody
    • Epididymis luminal protein 25 antibody
    • HEL25 antibody
    • Heterochromatin protein 1 alpha antibody
    • Heterochromatin protein 1 antibody
    • Heterochromatin protein 1 homolog alpha antibody
    • HP1 alpha antibody
    • HP1 alpha homolog antibody
    • HP1 antibody
    • HP1A antibody
    • HP1Hs alpha antibody
    • Su(var)205 antibody
    see all

Anti-HP1 alpha antibody [HP330A] images

  • Predicted band size : 22 kDa

    Lane 1: Wild-type HAP1 cell lysate (20 µg)
    Lane 2: HP1 alpha knockout HAP1 cell lysate (20 µg)
    Lane 3: HeLa cell lysate (20 µg)
    Lane 4: MCF7 cell lysate (20 µg)
    Lanes 1 - 4: Merged signal (red and green). Green - ab107100 observed at 28 kDa. Red - loading control, ab181602, observed at 37 kDa.
    ab107100 was shown to specifically react with HP1 alpha when HP1 alpha knockout samples were used. Wild-type and HP1 alpha knockout samples were subjected to SDS-PAGE. ab107100 and ab181602 (loading control to GAPDH) were diluted 1 µg/mL and 1/2000 respectively and incubated overnight at 4°C. Blots were developed with goat anti-rabbit IgG (H + L) and goat anti-mouse IgG (H + L) secondary antibodies at 1/10 000 dilution for 1 h at room temperature before imaging.

  • ab107100, at 1/20 dilution, staining HP1 alpha in Human Tonsil by Immunohistochemistry.

References for Anti-HP1 alpha antibody [HP330A] (ab107100)

ab107100 has not yet been referenced specifically in any publications.

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