Overview

  • Product name

  • Description

    Rabbit polyclonal to HP1 alpha
  • Host species

    Rabbit
  • Tested applications

    Suitable for: IP, IHC-P, WBmore details
  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide within Human HP1 alpha aa 150-191. The exact sequence is proprietary. NP_036249.1
    Database link: P45973

  • Positive control

    • WB: HeLa whole cell lysate. IP: HeLa whole cell lysate. IHC-P: Human prostate carcinoma tissue.

Properties

  • Form

    Liquid
  • Storage instructions

    Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.
  • Storage buffer

    Preservative: 0.09% Sodium azide
    Constituent: Tris citrate/phosphate

    pH 7 to 8
  • Concentration information loading...
  • Purity

    Immunogen affinity purified
  • Purification notes

    ab245573 was affinity purified using an epitope specific to HP1 alpha immobilized on solid support.
  • Clonality

    Polyclonal
  • Isotype

    IgG
  • Research areas

Applications

Our Abpromise guarantee covers the use of ab245573 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
IP Use at 2-5 µg/mg of lysate.
IHC-P 1/2000 - 1/10000. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
WB 1/1000 - 1/2500. Predicted molecular weight: 22 kDa.

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

  • Formalin-fixed, paraffin-embedded human prostate carcinoma tissue stained for HP1 alpha using ab245573 at 1/5000 dilution in immunohistochemical analysis. Detection: DAB staining.

  • All lanes : Anti-HP1 alpha antibody (ab245573) at 0.1 µg/ml

    Lane 1 : HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 50 µg
    Lane 2 : HeLa whole cell lysate at 15 µg

    Developed using the ECL technique.

    Predicted band size: 22 kDa


    Exposure time: 3 minutes
  • HP1 alpha was immunoprecipitated from HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate (1 mg for IP, 20% of IP loaded) with ab245573 at 3 µg/mg lysate. Western blot was performed from the immunoprecipitate using ab245573 at 1 µg/ml.

    Lane 1: ab245573 IP in HeLa whole cell lysate.
    Lane 2: Control IgG IP in HeLa whole cell lysate.

    Detection: Chemiluminescence with exposure time of 30 seconds.

References

ab245573 has not yet been referenced specifically in any publications.

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