• Product name
  • Description
    Rabbit polyclonal to PLK1
  • Host species
  • Tested applications
    Suitable for: WB, IPmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rabbit, Chimpanzee, Rhesus monkey, Gorilla, Chinese hamster, Orangutan, Elephant
  • Immunogen

    Synthetic peptide, corresponding to a region between residue 550 and the C-terminus (residue 603) of Human PLK1 (SwissProt entry P53350)

  • Positive control
    • Whole cell lysate from HeLa cells.



Our Abpromise guarantee covers the use of ab70697 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
  • Application notes
    IP: Use at 2 - 4 µg/mg of lysate.
    WB: 1/1000 - 1/10000. Detects a band of approximately 68 kDa (predicted molecular weight: 68 kDa).

    Not yet tested in other applications.
    Optimal dilutions/concentrations should be determined by the end user.
  • Target

    • Function
      Serine/threonine-protein kinase that performs several important functions throughout M phase of the cell cycle, including the regulation of centrosome maturation and spindle assembly, the removal of cohesins from chromosome arms, the inactivation of APC/C inhibitors, and the regulation of mitotic exit and cytokinesis. Required for recovery after DNA damage checkpoint and entry into mitosis. Required for kinetochore localization of BUB1B. Phosphorylates SGOL1. Required for spindle pole localization of isoform 3 of SGOL1 and plays a role in regulating its centriole cohesion function. Phosphorylates BORA, and thereby promotes the degradation of BORA. Contributes to the regulation of AURKA function. Regulates TP53 stability through phosphorylation of TOPORS.
    • Tissue specificity
      Placenta and colon.
    • Sequence similarities
      Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. CDC5/Polo subfamily.
      Contains 2 POLO box domains.
      Contains 1 protein kinase domain.
    • Developmental stage
      Accumulates to a maximum during the G2 and M phases, declines to a nearly undetectable level following mitosis and throughout G1 phase, and then begins to accumulate again during S phase.
    • Post-translational
      Catalytic activity is enhanced by phosphorylation of Thr-210. Phosphorylation at Thr-210 is first detected on centrosomes in the G2 phase of the cell cycle, peaks in prometaphase and gradually disappears from centrosomes during anaphase.
      Autophosphorylation and phosphorylation of Ser-137 may not be significant for the activation of PLK1 during mitosis, but may enhance catalytic activity during recovery after DNA damage checkpoint.
      Ubiquitinated by the anaphase promoting complex/cyclosome (APC/C) in anaphase and following DNA damage, leading to its degradation by the proteasome. Ubiquitination is mediated via its interaction with FZR1/CDH1. Ubiquitination and subsequent degradation prevents entry into mitosis and is essential to maintain an efficient G2 DNA damage checkpoint.
    • Cellular localization
      Nucleus. Chromosome > centromere > kinetochore. Cytoplasm > cytoskeleton > centrosome. During early stages of mitosis, the phosphorylated form is detected on centrosomes and kinetochores. Localizes to the outer kinetochore. Presence of SGOL1 and interaction with the phosphorylated form of BUB1 is required for the kinetochore localization.
    • Information by UniProt
    • Database links
    • Alternative names
      • Cell cycle regulated protein kinase antibody
      • PLK 1 antibody
      • PLK antibody
      • PLK-1 antibody
      • plk1 antibody
      • PLK1_HUMAN antibody
      • Polo like kinase 1 antibody
      • Polo-like kinase 1 antibody
      • Serine/threonine protein kinase 13 antibody
      • Serine/threonine protein kinase PLK1 antibody
      • Serine/threonine-protein kinase 13 antibody
      • Serine/threonine-protein kinase PLK1 antibody
      • STPK 13 antibody
      • STPK13 antibody
      see all


    • Lane 1 : Anti-PLK1 antibody (ab70697) at 2 µg/ml
      Lane 2 : Anti-PLK1 antibody (ab70697) at 1 µg/ml
      Lane 3 : Anti-PLK1 antibody (ab70697) at 0.2 µg/ml

      All lanes : Whole cell lysate from HeLa cells.

      Lysates/proteins at 50 µg per lane.

      Predicted band size: 68 kDa
      Observed band size: 68 kDa
      Additional bands at: <60 kDa. We are unsure as to the identity of these extra bands.

    • Analysis of Human PLK1 by Immunoprecipitation of whole cell lysate (600 µg) from HeLa cells using ab70697 at 2 µg/600 µg lysate. Immunoprecipitated PLK1 was detected with ab70697 at 0.5 µg/ml.


    This product has been referenced in:
    • Prystowsky M  et al. Inhibition of Plk1 and Cyclin B1 expression results in panobinostat-induced G2 delay and mitotic defects. Sci Rep 3:2640 (2013). WB . Read more (PubMed: 24026482) »

    See 1 Publication for this product

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