• Product nameAnti-Cdk4 antibody [EPR2513Y]
    See all Cdk4 primary antibodies
  • Description
    Rabbit monoclonal [EPR2513Y] to Cdk4
  • Tested applicationsSuitable for: ICC/IF, WB, IP, Flow Cytmore details
    Unsuitable for: IHC-P
  • Species reactivity
    Reacts with: Human
  • Immunogen

    A synthetic peptide corresponding to residues on the N-terminus of human CDK4.

  • Positive control
    • Cell lysates from: HeLa, MCF-7, Ramos and K562 cell lines. ICC/IF: Cdk4 wildtype and knockout HAP1 cells
  • General notes

    This product is a recombinant rabbit monoclonal antibody.

    Produced using Abcam’s RabMAb® technology. RabMAb® technology is covered by the following U.S. Patents, No. 5,675,063 and/or 7,429,487.

    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 Abpromise guarantee covers the use of ab68266 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 1/250.
WB 1/500 - 1/1000. Detects a band of approximately 34 kDa (predicted molecular weight: 34 kDa).
IP 1/30.
Flow Cyt 1/60.

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

  • Application notesIs unsuitable for IHC-P.
  • Target

    • FunctionSer/Thr-kinase component of cyclin D-CDK4 (DC) complexes that phosphorylate and inhibit members of the retinoblastoma (RB) protein family including RB1 and regulate the cell-cycle during G(1)/S transition. Phosphorylation of RB1 allows dissociation of the transcription factor E2F from the RB/E2F complexes and the subsequent transcription of E2F target genes which are responsible for the progression through the G(1) phase. Hypophosphorylates RB1 in early G(1) phase. Cyclin D-CDK4 complexes are major integrators of various mitogenenic and antimitogenic signals. Also phosphorylates SMAD3 in a cell-cycle-dependent manner and represses its transcriptional activity. Component of the ternary complex, cyclin D/CDK4/CDKN1B, required for nuclear translocation and activity of the cyclin D-CDK4 complex.
    • Involvement in diseaseDefects in CDK4 are a cause of susceptibility to cutaneous malignant melanoma type 3 (CMM3) [MIM:609048]. Malignant melanoma is a malignant neoplasm of melanocytes, arising de novo or from a pre-existing benign nevus, which occurs most often in the skin but also may involve other sites.
    • Sequence similaritiesBelongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily.
      Contains 1 protein kinase domain.
    • Post-translational
      Phosphorylation at Thr-172 is required for enzymatic activity. Phosphorylated, in vitro, at this site by CCNH-CDK7, but, in vivo, appears to be phosphorylated by a proline-directed kinase. In the cyclin D-CDK4-CDKN1B complex, this phosphorylation and consequent CDK4 enzyme activity, is dependent on the tyrosine phosphorylation state of CDKN1B. Thus, in proliferating cells, CDK4 within the complex is phosphorylated on Thr-172 in the T-loop. In resting cells, phosphorylation on Thr-172 is prevented by the non-tyrosine-phosphorylated form of CDKN1B.
    • Cellular localizationCytoplasm. Nucleus. Membrane. Cytoplasmic when non-complexed. Forms a cyclin D-CDK4 complex in the cytoplasm as cells progress through G(1) phase. The complex accumulates on the nuclear membrane and enters the nucleus on transition from G(1) to S phase. Also present in nucleoli and heterochromatin lumps. Colocalizes with RB1 after release into the nucleus.
    • Information by UniProt
    • Database links
    • Alternative names
      • Cdk 4 antibody
      • cdk4 antibody
      • CDK4 protein antibody
      • CDK4_HUMAN antibody
      • Cell division kinase 4 antibody
      • Cell division protein kinase 4 antibody
      • CMM 3 antibody
      • CMM3 antibody
      • Crk3 antibody
      • Cyclin dependent kinase 4 antibody
      • Cyclin-dependent kinase 4 antibody
      • Melanoma cutaneous malignant 3 antibody
      • MGC14458 antibody
      • p34 cdk4 antibody
      • PSK J3 antibody
      • PSK-J3 antibody
      see all

    Anti-Cdk4 antibody [EPR2513Y] images

    • Predicted band size : 34 kDa

      Lanes 1, 3 and 5: Wild-type HAP1 cell lysate (20 µg)
      Lanes 2, 4 and 6: CDK4 knockout HAP1 cell lysate (20 µg)
      Lanes 1 and 2: Green signal from target - ab68266 observed at 34 kDa
      Lanes 3 and 4: Red signal from loading control - ab8226 observed at 42 kDa
      Lanes 5 and 6: Merged (red and green) signal
      ab68266 was shown to specifically react with CDK4 when CDK4 knockout samples were used. Wild-type and CDK4 knockout samples were subjected to SDS-PAGE. ab68266 and ab8226 (loading control to beta actin) were both diluted at 1/1000 and incubated overnight at 4°C. Blots were developed with goat anti-rabbit IgG (H + L) and goat anti-mouse IgG (H + L) secondary antibodies at 1/10 000 dilution for 1 h at room temperature before imaging.

    • ab68266 staining Cdk4 in wild-type HAP1 cells (top panel) and Cdk4 knockout HAP1 cells (bottom panel). The cells were fixed with 4% formaldehyde (10min), 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 ab68266 at 1/250 dilution and ab195889 at 1/250 dilution (shown in pseudo colour red) overnight at +4°C, followed by a further incubation at room temperature for 1h with a goat secondary antibody to Rabbit IgG (Alexa Fluor® 488) (ab150081) at 2 μg/ml (shown in green). Nuclear DNA was labelled in blue with DAPI.

    • All lanes : Anti-Cdk4 antibody [EPR2513Y] (ab68266) at 1/500 dilution

      Lane 1 : HeLa cell lysate
      Lane 2 : MCF7 cell lysate
      Lane 3 : Romas cell lysate
      Lane 4 : K452 cell lysate

      Lysates/proteins at 10 µg per lane.

      HRP conjugated Goat anti-rabbit at 1/2000 dilution

      Predicted band size : 34 kDa
      Observed band size : 34 kDa

    References for Anti-Cdk4 antibody [EPR2513Y] (ab68266)

    This product has been referenced in:
    • Karst AM  et al. Modeling high-grade serous ovarian carcinogenesis from the fallopian tube. Proc Natl Acad Sci U S A 108:7547-52 (2011). Read more (PubMed: 21502498) »

    See 1 Publication for this product

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