• Product nameAnti-CREB antibody
    See all CREB primary antibodies
  • Description
    Rabbit polyclonal to CREB
  • SpecificityDetects endogenous levels of total CREB protein.
  • Tested applicationsSuitable for: WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat
  • Immunogen

    Synthetic non-phosphopeptide derived from human CREB around the phosphorylation site of serine 142 (D-L-SP-S-D).

  • Positive control
    • Hela cells treated with PMA, human lung carcinoma tissue.



Our Abpromise guarantee covers the use of ab51138 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 1/500 - 1/1000. Detects a band of approximately 37 kDa (predicted molecular weight: 37 kDa).
IHC-P Use at an assay dependent concentration.


  • FunctionThis protein binds the cAMP response element (CRE), a sequence present in many viral and cellular promoters. CREB stimulates transcription on binding to the CRE. Transcription activation is enhanced by the TORC coactivators which act independently of Ser-133 phosphorylation. Implicated in synchronization of circadian rhythmicity.
  • Involvement in diseaseDefects in CREB1 may be a cause of angiomatoid fibrous histiocytoma (AFH) [MIM:612160]. A distinct variant of malignant fibrous histiocytoma that typically occurs in children and adolescents and is manifest by nodular subcutaneous growth. Characteristic microscopic features include lobulated sheets of histiocyte-like cells intimately associated with areas of hemorrhage and cystic pseudovascular spaces, as well as a striking cuffing of inflammatory cells, mimicking a lymph node metastasis. Note=A chromosomal aberration involving CREB1 is found in a patient with angiomatoid fibrous histiocytoma. Translocation t(2;22)(q33;q12) with CREB1 generates a EWSR1/CREB1 fusion gene that is most common genetic abnormality in this tumor type.
  • Sequence similaritiesBelongs to the bZIP family.
    Contains 1 bZIP domain.
    Contains 1 KID (kinase-inducible) domain.
  • Post-translational
    Stimulated by phosphorylation. Phosphorylation of both Ser-133 and Ser-142 in the SCN regulates the activity of CREB and participates in circadian rhythm generation. Phosphorylation of Ser-133 allows CREBBP binding (By similarity). Phosphorylated upon DNA damage, probably by ATM or ATR.
    Sumoylated by SUMO1. Sumoylation on Lys-304, but not on Lys-285, is required for nuclear localization of this protein. Sumoylation is enhanced under hypoxia, promoting nuclear localization and stabilization.
  • Cellular localizationNucleus.
  • Information by UniProt
  • Database links
  • Alternative names
    • Active transcription factor CREB antibody
    • cAMP response element binding protein 1 antibody
    • cAMP response element binding protein antibody
    • cAMP responsive element binding protein 1 antibody
    • cAMP-responsive element-binding protein 1 antibody
    • CREB antibody
    • CREB-1 antibody
    • CREB1 antibody
    • CREB1_HUMAN antibody
    • Cyclic AMP-responsive element-binding protein 1 antibody
    • MGC9284 antibody
    • OTTHUMP00000163864 antibody
    • OTTHUMP00000163865 antibody
    • OTTHUMP00000206660 antibody
    • OTTHUMP00000206662 antibody
    • OTTHUMP00000206667 antibody
    • Transactivator protein antibody
    see all

Anti-CREB antibody images

  • All lanes : Anti-CREB antibody (ab51138) at 1/500 dilution

    Lane 1 : Extracts from Hela cells treated with PMA
    Lane 2 : Extracts from Hela cells treated with PMA with immunizing peptide

    Lysates/proteins at 0.125 µg/ml per lane.

    Predicted band size : 37 kDa
    Observed band size : 37 kDa
  • Ab51138 at 1/50 dilution staining human lung carcinoma tissue, with and without immunizing peptide; paraffin embedded.

References for Anti-CREB antibody (ab51138)

ab51138 has not yet been referenced specifically in any publications.

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There isn’t a specific protocol for performing IHC-P using this antibody. According to the datasheet the antibody concentration for IHC should be between 1/50-1/100, but optimisation is always recommended to...

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