Validated using a knockout cell line
Recombinant
RabMAb

Recombinant Anti-HP1 alpha antibody [EPR5777] - Heterochromatin marker (Alexa Fluor® 555) (ab203432)

Overview

  • Product name

    Anti-HP1 alpha antibody [EPR5777] - Heterochromatin marker (Alexa Fluor® 555)
    See all HP1 alpha primary antibodies
  • Description

    Rabbit monoclonal [EPR5777] to HP1 alpha - Heterochromatin marker (Alexa Fluor® 555)
  • Host species

    Rabbit
  • Conjugation

    Alexa Fluor® 555. Ex: 555nm, Em: 565nm
  • Tested applications

    Suitable for: ICC/IFmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide within Human HP1 alpha aa 150-250. The exact sequence is proprietary.

  • Positive control

    • ICC/IF: MCF7 and wildtype HAP1 cells.
  • General notes

    Alternative versions available:
    Anti-HP1 alpha antibody [EPR5777] - Heterochromatin marker (ab109028) - Knockout validated

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.

Properties

Applications

Our Abpromise guarantee covers the use of ab203432 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
ICC/IF 1/50 - 1/500.

Target

  • Function

    Component 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 similarities

    Contains 2 chromo domains.
  • Post-translational
    modifications

    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.
    Ubiquitinated.
  • Cellular localization

    Nucleus. 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

Images

  • ab203432 staining HP1α in wild-type HAP1 cells (top panel) and HP1α in wild-type HAP1 cells (bottom panel). The cells were fixed with 100% methanol (5min), permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1h. The cells were then incubated with ab203432 at 1/500 dilution (shown in pseudo colour green) and ab7291 at 1μg/ml concentration overnight at +4°C, followed by a further incubation at room temperature for 1h with a goat secondary antibody to Mouse IgG (Alexa Fluor® 647) (ab150119) at 2 μg/ml (shown in red). Nuclear DNA was labelled in blue with DAPI.

    This product also gave a positive signal under the same testing conditions in HAP1 cells fixed with 4% formaldehyde (10 min).

    Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8)

  • ab203432 staining HP1 in MCF7 cells. The cells were fixed with 4% formaldehyde (10 min), permeabilized with 0.1% Triton X-100 for 5 minutes and then blocked with 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1h. The cells were then incubated overnight at +4°C with ab203432 at a 1/50 dilution (shown in green) and ab195884, Rat monoclonal to alpha Tubulin (Alexa Fluor® 647), at a 1/250 dilution (shown in red). Nuclear DNA was labelled with DAPI (shown in blue).

    Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).

References

ab203432 has not yet been referenced specifically in any publications.

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