Overview

  • Product name

  • Description

    Rabbit polyclonal to Cdk8
  • Host species

    Rabbit
  • Tested applications

    Suitable for: WB, IHC-P, IPmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Mouse
  • Immunogen

    Synthetic peptide within Human Cdk8 aa 420-464. The exact sequence is proprietary. (NP_001251.1).
    Database link: P49336

  • Positive control

    • IHC-P: Human breast carcinoma tissue. WB: HeLa and HEK-293T whole cell lysates. IP: HeLa whole cell lysate (ab150035).

Properties

Applications

Our Abpromise guarantee covers the use of ab224828 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 1/2000 - 1/10000. Predicted molecular weight: 53 kDa.
IHC-P 1/100 - 1/500. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
IP Use at 2-5 µg/mg of lysate.

Target

  • Function

    Component of the Mediator complex, a coactivator involved in regulated gene transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors. Phosphorylates the CTD (C-terminal domain) of the large subunit of RNA polymerase II (RNAp II), which may inhibit the formation of a transcription initiation complex. Phosphorylates CCNH leading to down-regulation of the TFIIH complex and transcriptional repression. Recruited through interaction with MAML1 to hyperphosphorylate the intracellular domain of NOTCH, leading to its degradation.
  • Sequence similarities

    Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily.
    Contains 1 protein kinase domain.
  • Cellular localization

    Nucleus.
  • Information by UniProt
  • Database links

  • Alternative names

    • cdk8 antibody
    • CDK8 protein kinase antibody
    • CDK8_HUMAN antibody
    • Cell Division Kinase 8 antibody
    • Cell division protein kinase 8 antibody
    • Cyclin Dependent kinase 8 antibody
    • Cyclin-dependent kinase 8 antibody
    • K35 antibody
    • Mediator complex subunit cdk8 antibody
    • Mediator of RNA polymerase II transcription subunit cdk8 antibody
    • Protein kinase K35 antibody
    see all

Images

  • All lanes : Anti-Cdk8 antibody (ab224828) at 0.04 µg/ml

    Lane 1 : HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 50 µg
    Lane 2 : HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 15 µg
    Lane 3 : HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 5 µg
    Lane 4 : HEK-293T (human epithelial cell line from embryonic kidney transformed with large T antigen) whole cell lysate at 50 µg

    Developed using the ECL technique.

    Predicted band size: 53 kDa


    Exposure time: 3 minutes
  • Formalin-fixed, paraffin-embedded human breast carcinoma tissue stained for Cdk8 using ab224828 at 1/200 dilution in immunohistochemical analysis. Detection: DAB staining.

  • Cdk8 was immunoprecipitated from HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate (1 mg for IP, 20% of IP loaded) with ab224828 at 3 µg/mg lysate. Western blot was performed from the immunoprecipitate using ab224828 at 0.4 µg/ml.

    Lane 1: ab224828 IP in HeLa whole cell lysate.

    Lane 2: Control IgG IP in HeLa whole cell lysate.

    Detection:  Chemiluminescence with exposure time of 30 seconds.

References

ab224828 has not yet been referenced specifically in any publications.

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