• Product name
    Anti-YB1 antibody [EP2706Y]
    See all YB1 primary antibodies
  • Description
    Rabbit monoclonal [EP2706Y] to YB1
  • Host species
  • Tested applications
    Suitable for: WB, IP, Flow Cytmore details
    Unsuitable for: ICC or IHC-P
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Synthetic peptide within Human YB1 aa 1-100 (N terminal). The exact sequence is proprietary.

  • Positive control
    • HeLa, 293T, Jurkat and MCF7 cell lysates; permeabilized HeLa cells.
  • General notes

    Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

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



Our Abpromise guarantee covers the use of ab76540 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 1/10000 - 1/20000. Predicted molecular weight: 36 kDa.
IP 1/50.
Flow Cyt 1/60.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.


  • Application notes
    Is unsuitable for ICC or IHC-P.
  • Target

    • Function
      Mediates pre-mRNA alternative splicing regulation. Binds to splice sites in pre-mRNA and regulates splice site selection. Binds and stabilizes cytoplasmic mRNA. Contributes to the regulation of translation by modulating the interaction between the mRNA and eukaryotic initiation factors (By similarity). Regulates the transcription of numerous genes. Its transcriptional activity on the multidrug resistance gene MDR1 is enhanced in presence of the APEX1 acetylated form at 'Lys-6' and 'Lys-7'. Binds to promoters that contain a Y-box (5'-CTGATTGGCCAA-3'), such as MDR1 and HLA class II genes. Promotes separation of DNA strands that contain mismatches or are modified by cisplatin. Has endonucleolytic activity and can introduce nicks or breaks into double-stranded DNA (in vitro). May play a role in DNA repair. Component of the CRD-mediated complex that promotes MYC mRNA stability.
      The secreted form acts as an extracellular mitogen and stimulates cell migration and proliferation.
    • Sequence similarities
      Contains 1 CSD (cold-shock) domain.
    • Post-translational
      Ubiquitinated by RBBP6; leading to a decrease of YBX1 transcativational ability.
      In the absence of phosphorylation the protein is retained in the cytoplasm.
      Cleaved by a 20S proteasomal protease in response to agents that damage DNA. Cleavage takes place in the absence of ubiquitination and ATP. The resulting N-terminal fragment accumulates in the nucleus.
    • Cellular localization
      Cytoplasm. Nucleus. Cytoplasmic granule. Secreted. Localized in cytoplasmic mRNP granules containing untranslated mRNAs. Shuttles between nucleus and cytoplasm. Predominantly cytoplasmic in proliferating cells. Cytotoxic stress and DNA damage enhance translocation to the nucleus. Localized with DDX1, MBNL1 and TIAL1 in stress granules upon stress. Secreted by mesangial and monocytic cells after inflammatory challenges. Translocates from the cytoplasm to the nucleus after and colocalizes with APEX1 in nuclear speckles after genotoxic stress.
    • Information by UniProt
    • Database links
    • Alternative names
      • BP 8 antibody
      • CBF-A antibody
      • CCAAT binding transcription factor I subunit A antibody
      • CCAAT-binding transcription factor I subunit A antibody
      • CSDA2 antibody
      • CSDB antibody
      • DBPB antibody
      • DNA binding protein B antibody
      • DNA-binding protein B antibody
      • EFI-A antibody
      • Enhancer factor I subunit A antibody
      • MDR NF1 antibody
      • MGC104858 antibody
      • MGC110976 antibody
      • MGC117250 antibody
      • NSEP 1 antibody
      • NSEP1 antibody
      • Nuclease sensitive element binding protein 1 antibody
      • Nuclease-sensitive element-binding protein 1 antibody
      • p50 antibody
      • Q15905 antibody
      • Y-box binding protein 1 antibody
      • Y-box transcription factor antibody
      • Y-box-binding protein 1 antibody
      • YB 1 antibody
      • YB-1 antibody
      • YBOX1_HUMAN antibody
      • YBX 1 antibody
      • ybx1 antibody
      see all


    • Flow cytometric analysis of permeabilized HeLa cells using ab76540 at 1/60 dilution (red) or a rabbit IgG (negative) (green)
    • All lanes : Anti-YB1 antibody [EP2706Y] (ab76540) at 1/20000 dilution

      Lane 1 : HeLa cell lysate
      Lane 2 : 293T cell lysate
      Lane 3 : Jurkat cell lysate
      Lane 4 : MCF7 cell lysate

      Lysates/proteins at 10 µg per lane.

      All lanes : goat anti-rabbit HRP at 1/1000 dilution

      Predicted band size: 36 kDa
      Observed band size: 47 kDa
      why is the actual band size different from the predicted?


    This product has been referenced in:
    • Kariminia A  et al. Y-box-binding protein 1 contributes to IL-7-mediated survival signaling in B-cell precursor acute lymphoblastic leukemia. Oncol Lett 13:497-505 (2017). Read more (PubMed: 28123588) »
    • Pu L  et al. Development of a Chemiluminescence Immunoassay for Serum YB-1 and its Clinical Application as a Potential Diagnostic Marker for Hepatocellular Carcinoma. Hepat Mon 13:e8918 (2013). Read more (PubMed: 24069038) »
    See all 2 Publications for this product

    Customer reviews and Q&As

    Western blot
    Human Cell lysate - whole cell (293T)
    Loading amount
    30000 cells
    Gel Running Conditions
    Reduced Denaturing (4-20% TrisGlycine)
    Blocking step
    5% Milk, 1% BSA as blocking agent for 16 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 4°C

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