Date published: 2025-9-24

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Cdk8 Antibody (D-9): sc-13155

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Datasheets
  • Cdk8 Antibody (D-9) is a mouse monoclonal IgG1 κ Cdk8 antibody, cited in 22 publications, provided at 200 µg/ml
  • raised against amino acids 326-464 of Cdk8 of human origin
  • Cdk8 Antibody (D-9) is recommended for detection of Cdk8 of mouse, rat and human origin by WB, IP, IF, IHC(P) and ELISA
  • Anti-Cdk8 Antibody (D-9) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to TRITC for IF, IHC(P) and FCM
  • Contact our Technical Service Department (or your local Distributor) for more information on how to receive a FREE 10 µg sample of Cdk8 (D-9): sc-13155.
  • m-IgG Fc BP-HRP and m-IgG1 BP-HRP are the preferred secondary detection reagents for Cdk8 Antibody (D-9) for WB and IHC(P) applications. These reagents are now offered in bundles with Cdk8 Antibody (D-9) (see ordering information below).

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SEE ALSO...

Cdk8 Antibody (D-9) is a mouse monoclonal IgG1 kappa light chain antibody that detects Cdk8 protein of mouse, rat, and human origin through applications such as western blotting, immunoprecipitation, immunofluorescence, immunohistochemistry, and enzyme-linked immunosorbent assay. Cdk8 (D-9) antibody is offered in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase, phycoerythrin, fluorescein isothiocyanate, and multiple Alexa Fluor® conjugates. Cdk8 plays a crucial role in regulating cell cycle progression, functioning as part of a larger family of cyclin-dependent kinases (Cdks) that work in tandem with cyclins to phosphorylate essential substrates at different phases of the cell cycle. This regulation is vital for maintaining proper cellular function and ensuring that cells divide accurately and at the right time. Cdk8 forms large complexes with cyclin C and the large subunit of RNA polymerase II, suggesting involvement in transcriptional regulation. By modulating RNA polymerase II activity, Cdk8 influences gene expression, which is critical for various cellular processes, including growth and differentiation. Cdk8 acts as a transcriptional activator when fused to the DNA binding domain of GAL4, highlighting importance in transcriptional control.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

Cdk8 Antibody (D-9) References:

  1. PCTAIRE-1 and PCTAIRE-3, two members of a novel cdc2/CDC28-related protein kinase gene family.  |  Okuda, T., et al. 1992. Oncogene. 7: 2249-58. PMID: 1437147
  2. Conversion of antigen-specific effector/memory T cells into Foxp3-expressing Treg cells by inhibition of CDK8/19.  |  Akamatsu, M., et al. 2019. Sci Immunol. 4: PMID: 31653719
  3. CDK8 and CDK19: positive regulators of signal-induced transcription and negative regulators of Mediator complex proteins.  |  Chen, M., et al. 2023. Nucleic Acids Res. 51: 7288-7313. PMID: 37378433
  4. CDK8 inhibitors antagonize HIV-1 reactivation and promote provirus latency in T cells.  |  Horvath, RM., et al. 2023. J Virol. 97: e0092323. PMID: 37671866
  5. Identification of human cyclin-dependent kinase 8, a putative protein kinase partner for cyclin C.  |  Tassan, JP., et al. 1995. Proc Natl Acad Sci U S A. 92: 8871-5. PMID: 7568034
  6. The cell cycle kinases.  |  Pines, J. 1994. Semin Cancer Biol. 5: 305-13. PMID: 7803767
  7. Cyclin C/CDK8 is a novel CTD kinase associated with RNA polymerase II.  |  Rickert, P., et al. 1996. Oncogene. 12: 2631-40. PMID: 8700522
  8. Drosophila Cdk8, a kinase partner of cyclin C that interacts with the large subunit of RNA polymerase II.  |  Leclerc, V., et al. 1996. Mol Biol Cell. 7: 505-13. PMID: 8730095
  9. Cyclins, cyclin-dependent kinases and cdk inhibitors: implications in cell cycle control and cancer.  |  MacLachlan, TK., et al. 1995. Crit Rev Eukaryot Gene Expr. 5: 127-56. PMID: 8845581
  10. Viral transactivators E1A and VP16 interact with a large complex that is associated with CTD kinase activity and contains CDK8.  |  Gold, MO., et al. 1996. Nucleic Acids Res. 24: 3771-7. PMID: 8871557
  11. Role of the cyclin-dependent kinase 4 and 6 inhibitor gene family p15, p16, p18 and p19 in leukemia and lymphoma.  |  Siebert, R., et al. 1996. Leuk Lymphoma. 23: 505-20. PMID: 9031081
  12. Current concepts in neuro-oncology: the cell cycle--a review.  |  Dirks, PB. and Rutka, JT. 1997. Neurosurgery. 40: 1000-13; discussion 1013-5. PMID: 9149259

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Cdk8 Antibody (D-9)

sc-13155
200 µg/ml
$316.00

Cdk8 Antibody (D-9): m-IgG Fc BP-HRP Bundle

sc-526545
200 µg Ab; 10 µg BP
$354.00

Cdk8 Antibody (D-9): m-IgG1 BP-HRP Bundle

sc-531918
200 µg Ab; 20 µg BP
$354.00

Cdk8 Antibody (D-9) AC

sc-13155 AC
500 µg/ml, 25% agarose
$416.00

Cdk8 Antibody (D-9) HRP

sc-13155 HRP
200 µg/ml
$316.00

Cdk8 Antibody (D-9) FITC

sc-13155 FITC
200 µg/ml
$330.00

Cdk8 Antibody (D-9) PE

sc-13155 PE
200 µg/ml
$343.00

Cdk8 Antibody (D-9) Alexa Fluor® 488

sc-13155 AF488
200 µg/ml
$357.00

Cdk8 Antibody (D-9) Alexa Fluor® 546

sc-13155 AF546
200 µg/ml
$357.00

Cdk8 Antibody (D-9) Alexa Fluor® 594

sc-13155 AF594
200 µg/ml
$357.00

Cdk8 Antibody (D-9) Alexa Fluor® 647

sc-13155 AF647
200 µg/ml
$357.00

Cdk8 Antibody (D-9) Alexa Fluor® 680

sc-13155 AF680
200 µg/ml
$357.00

Cdk8 Antibody (D-9) Alexa Fluor® 790

sc-13155 AF790
200 µg/ml
$357.00

Cdk8 Antibody (D-9) TRITC

sc-13155 TRITC
200 µg/ml
$320.00

Basing on the previous question and answer; So, sometimes, 77kDa is possible, right?

Asked by: yu27
Thanks for your follow-up question. Yes, it could be!
Answered by: Tech Service
Date published: 2019-11-19

The question is about molecular weight of CDK8. The first picture is about 77kDa, but the others are 55KDa, which is right? The instruction is 53kDa.

Asked by: yu27
Thank you for your question. The expected molecular weight for CDK8 is around 53-55kDa. Western blotting is a technique that separates proteins based on size - in general, the smaller the protein the faster it migrates through the gel. However, migration is also affected by other factors and so the actual band size observed may differ from that predicted. Common factors include phosphorylations, glycosylations or other post-translational modifications.
Answered by: Tech Service
Date published: 2019-11-19

Does this antibody recognise CDK19 as well?

Asked by: edimi
Thank you for your question. This antibody is specific for Cdk8, and does not cross-react with Cdk19.
Answered by: Technical Support
Date published: 2019-08-17

Can Cdk8 (D-9): sc-13155 monoclonal antibody be used in IF or IHC with mouse tissue or cells? Will there be non-specific staining?

Asked by: Cweed
Thank you for your inquiry. The use of mouse monoclonal antibodies with mouse samples is very common and typically poses no problem. To eliminate any potential cross-reactivity of an anti-mouse secondary detection reagent, Cdk8 (D-9): sc-13155 is available in a variety of direct conjugations, such as HRP, PE, FITC and AlexaFluors.
Answered by: Technical Support
Date published: 2017-02-24
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Rated 1 out of 5 by from Didnot work for WBDid not work for western blot in MCF7 breast cancer cell line
Date published: 2017-11-21
Rated 5 out of 5 by from good qualityNever meet difficulties use this antibody, very easy operated at 1:500 dilution and got strong band at 53kda.I suggest the loading amount reference to the papers about the expression of the target protein.For high expresion sample loading 30ug is enough.
Date published: 2017-09-10
Rated 5 out of 5 by from VERY GOOD AntiibodyI got this antibody for my research and it gives very nice band with no background. We loaded 25 ug of protein and the bands were clear and crisp.
Date published: 2017-09-04
Rated 5 out of 5 by from western blotI used this antibody for western blot and got great results.I blotted cell lysates from primary hippocampal neurons. The signal was not very powerful and no background.
Date published: 2017-08-26
Rated 4 out of 5 by from goodIt is strong with 1:2000 dilution but has several weak non-specific bands far away in many different types of colon cancer cells.
Date published: 2017-05-12
Rated 5 out of 5 by from good qualityThis antibody has good quality and specific . I found clear bands, strong signals.
Date published: 2017-05-09
Rated 5 out of 5 by from Versatile AntibodyThis antibody is well-cited for a variety of applications including WB, IP, IF, and even ELISA. Strong, clear signal with little to no background. Works well in a variety of species including mouse, rat, and human samples.
Date published: 2017-01-30
Rated 5 out of 5 by from Good Cdk8 control antibody for siRNA KO experimentGood Cdk8 control antibody for siRNA KO experiment -SCBT QC
Date published: 2015-04-13
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Cdk8 Antibody (D-9) is rated 4.5 out of 5 by 11.
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