• Product name

  • Description

    Rabbit polyclonal to GFI1B
  • Host species

  • Tested applications

    Suitable for: WBmore details
  • Species reactivity

    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide conjugated to KLH, surrounding amino acids 322-326 (HRESQ) of Human GFI1B.

  • Positive control

    • Raji cell lysate.



Our Abpromise guarantee covers the use of ab119379 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. Predicted molecular weight: 37 kDa.


  • Function

    Essential proto-oncogenic transcriptional regulator necessary for development and differentiation of erythroid and megakaryocytic lineages. Transcriptional repressor or activator depending on both promoter and cell type context; represses promoter activity of SOCS1 and SOCS3 and thus, may regulate cytokine signaling pathways. Cooperates with GATA1 to repress target gene transcription, such as the apoptosis regulator BCL2L1; GFI1B silencing in leukemic cell lines markedly increase apoptosis rate. Inhibits down-regulation of MYC and MYB as well as the cyclin-dependent kinase inhibitor CDKN1A/P21WAF1 in IL6-treated myelomonocytic cells. Represses expression of GATA3 in T-cell lymphomas and inhibits GATA1-mediated transcription; as GATA1 also mediates erythroid GFI1B transcription, both GATA1 and GFI1B participate in a feedback regulatory pathway controlling the expression of GFI1B gene in erythroid cells. Suppresses GATA1-mediated stimulation of GFI1B promoter through protein interaction. Binds to gamma-satellite DNA and to its own promoter, auto-repressing its own expression. Alters histone methylation by recruiting histone methyltransferase to target genes promoters. Plays a role in heterochromatin formation.
  • Tissue specificity

    Expressed in bone marrow and fetal liver, but also detectable in fetal spleen, fetal thymus, and testes. Detected in hematopoietic stem cells, erythroblasts, and megakaryocytes. Overexpressed in bone marrow of patients with erythroleukemia and megakaryocytic leukemia as well as in their corresponding leukemic cell lines, and markedly repressed in severe aplastic anemia (SAA).
  • Sequence similarities

    Contains 6 C2H2-type zinc fingers.
  • Domain

    The zinc finger domains are essential for erythroid expansion and acts as an activation domain whereas non finger domain serves as repression domain.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • GFI 1B antibody
    • gfi1b antibody
    • GFI1B protein antibody
    • GFI1B_HUMAN antibody
    • Growth factor independent 1B protein antibody
    • Growth factor independent 1B transcription repressor antibody
    • Growth factor independent protein 1B antibody
    • OTTHUMP00000022443 antibody
    • OTTHUMP00000022444 antibody
    • OTTHUMP000000235527 antibody
    • Potential regulator of CDKN1A antibody
    • Potential regulator of CDKN1A translocated in CML antibody
    • Translocated in CML antibody
    • Zinc finger protein Gfi-1b antibody
    see all


  • Anti-GFI1B antibody (ab119379) at 1/500 dilution + Raji cell extract

    Predicted band size: 37 kDa


ab119379 has not yet been referenced specifically in any publications.

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