Associated products


Our Abpromise guarantee covers the use of ab26978 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Applications

    Blocking - Blocking peptide for Anti-HEXIM1 antibody (ab25388)

  • Form

  • Additional notes

    - First try to dissolve a small amount of peptide in either water or buffer. The more charged residues on a peptide, the more soluble it is in aqueous solutions.
    - If the peptide doesn’t dissolve try an organic solvent e.g. DMSO, then dilute using water or buffer.
    - Consider that any solvent used must be compatible with your assay. If a peptide does not dissolve and you need to recover it, lyophilise to remove the solvent.
    - Gentle warming and sonication can effectively aid peptide solubilisation. If the solution is cloudy or has gelled the peptide may be in suspension rather than solubilised.
    - Peptides containing cysteine are easily oxidised, so should be prepared in solution just prior to use.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

    Information available upon request.

General Info

  • Alternative names

    • Cardiac lineage protein 1
    • CLP 1
    • CLP1
    • EDG 1
    • EDG1
    • Estrogen down-regulated gene 1 protein
    • FLJ13562
    • Hexamethylene bis acetamide inducible 1
    • Hexamethylene bis acetamide inducible protein
    • Hexamethylene bis acetamide inducible transcript 1
    • Hexamethylene bis-acetamide-inducible protein 1
    • HEXIM 1
    • Hexim1
    • HEXIM1 protein
    • HIS 1
    • HIS1
    • HMBA inducible
    • MAQ 1
    • MAQ1
    • Menage a quatre 1
    • Menage a quatre protein 1
    • Protein HEXIM1
    see all
  • Function

    Transcriptional regulator which functions as a general RNA polymerase II transcription inhibitor. In cooperation with 7SK snRNA sequesters P-TEFb in a large inactive 7SK snRNP complex preventing RNA polymerase II phosphorylation and subsequent transcriptional elongation. May also regulate NF-kappa-B, ESR1, NR3C1 and CIITA-dependent transcriptional activity.
  • Tissue specificity

    Ubiquitously expressed with higher expression in placenta. HEXIM1 and HEXIM2 are differentially expressed. Expressed in endocrine tissues.
  • Sequence similarities

    Belongs to the HEXIM family.
  • Domain

    The coiled-coil domain mediates oligomerization.
  • Cellular localization

    Nucleus. Cytoplasm. Binds alpha-importin and is mostly nuclear.
  • Information by UniProt


ab26978 has not yet been referenced specifically in any publications.

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