Validated using a knockout cell line

Recombinant Anti-HAUSP / USP7 antibody [EPR4254] (ab109109)


  • Product name

    Anti-HAUSP / USP7 antibody [EPR4254]
    See all HAUSP / USP7 primary antibodies
  • Description

    Rabbit monoclonal [EPR4254] to HAUSP / USP7
  • Host species

  • Tested applications

    Suitable for: WB, IPmore details
    Unsuitable for: Flow Cyt,ICC or IHC-P
  • Species reactivity

    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide corresponding to residues in Human USP7 (UniProt Q93009).

  • Positive control

    • T47-D and Hela cell lysates
  • General notes



    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.



Our Abpromise guarantee covers the use of ab109109 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 1/1000 - 1/10000. Detects a band of approximately 135 kDa (predicted molecular weight: 128 kDa).
IP 1/10 - 1/100.
  • Application notes
    Is unsuitable for Flow Cyt,ICC or IHC-P.
  • Target

    • Function

      Hydrolase that deubiquitinates target proteins such as FOXO4, p53/TP53, MDM2, ERCC6, DNMT1, UHRF1, PTEN and DAXX (PubMed:11923872, PubMed:15053880, PubMed:16964248, PubMed:18716620, PubMed:25283148). Together with DAXX, prevents MDM2 self-ubiquitination and enhances the E3 ligase activity of MDM2 towards p53/TP53, thereby promoting p53/TP53 ubiquitination and proteasomal degradation. Deubiquitinates p53/TP53, preventing degradation of p53/TP53, and enhances p53/TP53-dependent transcription regulation, cell growth repression and apoptosis (PubMed:25283148). Deubiquitinates p53/TP53 and MDM2 and strongly stabilizes p53/TP53 even in the presence of excess MDM2, and also induces p53/TP53-dependent cell growth repression and apoptosis. Deubiquitination of FOXO4 in presence of hydrogen peroxide is not dependent on p53/TP53 and inhibits FOXO4-induced transcriptional activity. In association with DAXX, is involved in the deubiquitination and translocation of PTEN from the nucleus to the cytoplasm, both processes that are counteracted by PML. Involved in cell proliferation during early embryonic development. Involved in transcription-coupled nucleotide excision repair (TC-NER) in response to UV damage: recruited to DNA damage sites following interaction with KIAA1530/UVSSA and promotes deubiquitination of ERCC6, preventing UV-induced degradation of ERCC6. Contributes to the overall stabilization and trans-activation capability of the herpesvirus 1 trans-acting transcriptional protein ICP0/VMW110 during HSV-1 infection. Involved in maintenance of DNA methylation via its interaction with UHRF1 and DNMT1: acts by mediating deubiquitination of UHRF1 and DNMT1, preventing their degradation and promoting DNA methylation by DNMT1 (PubMed:21745816). Exhibits a preference towards 'Lys-48'-linked ubiquitin chains. Increases regulatory T-cells (Treg) suppressive capacity by deubiquitinating and stabilizing the transcription factor FOXP3 which is crucial for Treg cell function (PubMed:23973222).
    • Tissue specificity

      Widely expressed. Overexpressed in prostate cancer.
    • Sequence similarities

      Belongs to the peptidase C19 family.
      Contains 1 MATH domain.
      Contains 1 USP domain.
    • Domain

      The C-terminus plays a role in its oligomerization.
    • Post-translational

      Isoform 1: Phosphorylated. Isoform 1 is phosphorylated at positions Ser-18 and Ser-963. Isoform 2: Not phosphorylated.
      Isoform 1: Polyneddylated. Isoform 2: Not Polyneddylated.
      Isoform 1 and isoform 2: Not sumoylated.
      Isoform 1 and isoform 2: Polyubiquitinated by herpesvirus 1 trans-acting transcriptional protein ICP0/VMW110; leading to its subsequent proteasomal degradation. Isoform 1: Ubiquitinated at Lys-869.
    • Cellular localization

      Nucleus. Cytoplasm. Nucleus, PML body. Present in a minority of ND10 nuclear bodies. Association with ICP0/VMW110 at early times of infection leads to an increased proportion of USP7-containing ND10. Colocalizes with ATXN1 in the nucleus. Colocalized with DAXX in speckled structures. Colocalized with PML and PTEN in promyelocytic leukemia protein (PML) nuclear bodies.
    • Information by UniProt
    • Database links

    • Alternative names

      • Deubiquitinating enzyme 7 antibody
      • HAUSP antibody
      • Herpes virus associated ubiquitin specific protease antibody
      • Herpesvirus-associated ubiquitin-specific protease antibody
      • TEF 1 antibody
      • tef-1 antibody
      • TEF1 antibody
      • Ubiquitin carboxyl terminal hydrolase 7 antibody
      • Ubiquitin carboxyl-terminal hydrolase 7 antibody
      • Ubiquitin specific peptidase 7 (herpes virus associated) antibody
      • Ubiquitin specific peptidase 7 antibody
      • Ubiquitin specific peptidase 7 herpes virus associated antibody
      • Ubiquitin specific processing protease 7 antibody
      • Ubiquitin specific protease 7 (herpes virus associated) antibody
      • Ubiquitin specific protease 7 antibody
      • Ubiquitin specific protease 7 herpes virus associated antibody
      • Ubiquitin thioesterase 7 antibody
      • Ubiquitin thiolesterase 7 antibody
      • Ubiquitin-specific-processing protease 7 antibody
      • UBP 7 antibody
      • UBP-7 antibody
      • UBP7 antibody
      • UBP7_HUMAN antibody
      • USP 7 antibody
      • usp-7 antibody
      • Usp7 antibody
      • VMW110-ASSOCIATED PROTEIN, 135-KD antibody
      see all


    • Lane 1: Wild-type HAP1 cell lysate (20 µg)
      Lane 2: HAUSP / USP7 knockout HAP1 cell lysate (20 µg)
      Lane 3: HeLa cell lysate (20 µg)
      Lane 4: MCF-7 cell lysate (20 µg) 
      Lanes 1 - 4: Merged signal (red and green). Green - ab109109 observed at 135 kDa. Red - loading control, ab8245, observed at 37 kDa.
      ab109109 was shown to specifically react with HAUSP / USP7 when HAUSP / USP7 knockout samples were used. Wild-type and HAUSP / USP7 knockout samples were subjected to SDS-PAGE. ab109109 and ab8245 (loading control to GADPH) were diluted 1/1000 and 1/2000 respectively and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10000 dilution for 1 h at room temperature before imaging.

    • All lanes : Anti-HAUSP / USP7 antibody [EPR4254] (ab109109) at 1/1000 dilution

      Lane 1 : T47-D cell lysate
      Lane 2 : Hela cell lysate

      Lysates/proteins at 10 µg per lane.

      All lanes : HRP labelled goat anti-rabbit at 1/2000 dilution

      Predicted band size: 128 kDa
      Observed band size: 135 kDa
      why is the actual band size different from the predicted?


    ab109109 has not yet been referenced specifically in any publications.

    Customer reviews and Q&As

    Western blot
    Human Cell lysate - whole cell (HAP1 cell line)
    Gel Running Conditions
    Non-reduced Denaturing (gradient 4-12%)
    Loading amount
    50 µg
    HAP1 cell line
    Blocking step
    BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: RT°C

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    Submitted Feb 21 2017

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