Fast track antibodies constitute a diverse group of products that have been released to accelerate your research, but are not yet fully characterized. They have all been affinity purified and show high titre values against the immunizing peptide (by ELISA). Fast track terms of use

Application Abreviews Notes
WB Use at an assay dependent concentration. Predicted molecular weight: 14 kDa.

Preliminary experiments gave an approx 25kDa band in Human Spleen lysates after 1µg/ml antibody staining. Please note that currently we cannot find an explanation in the literature for the band we observe given the calculated size of 14.1kDa according to NP_006390.1. The 25kDa band was successfully blocked by incubation with the immunizing peptide.


  • Function
    AP-1 family transcription factor that controls the differentiation of lineage-specific cells in the immune system: specifically mediates the differentiation of T-helper 17 cells (Th17), follicular T-helper cells (TfH), CD8(+) dendritic cells and class-switch recombination (CSR) in B-cells. Acts via the formation of a heterodimer with JUNB that recognizes and binds DNA sequence 5'-TGA[CG]TCA-3'. The BATF-JUNB heterodimer also forms a complex with IRF4 (or IRF8) in immune cells, leading to recognition of AICE sequence (5'-TGAnTCA/GAAA-3'), an immune-specific regulatory element, followed by cooperative binding of BATF and IRF4 (or IRF8) and activation of genes. Controls differentiation of T-helper cells producing interleukin-17 (Th17 cells) by binding to Th17-associated gene promoters: regulates expression of the transcription factor RORC itself and RORC target genes such as IL17 (IL17A or IL17B). Also involved in differentiation of follicular T-helper cells (TfH) by directing expression of BCL6 and MAF. In B-cells, involved in class-switch recombination (CSR) by controlling the expression of both AICDA and of germline transcripts of the intervening heavy-chain region and constant heavy-chain region (I(H)-C(H)). Following infection, can participate in CD8(+) dendritic cell differentiation via interaction with IRF4 and IRF8 to mediate cooperative gene activation. Regulates effector CD8(+) T-cell differentiation by regulating expression of SIRT1. Following DNA damage, part of a differentiation checkpoint that limits self-renewal of hematopoietic stem cells (HSCs): up-regulated by STAT3, leading to differentiation of HSCs, thereby restricting self-renewal of HSCs.
  • Tissue specificity
    Expressed at highest levels in lung, and at lower levels in placenta, liver, kidney, spleen, and peripheral blood. Detected in SW480 colorectal cancer cell line and several hematopoietic tumor cell lines, including Raji Burkitt's lymphoma. Strongly expressed in mature B- and T-lymphocytes. Also expressed in moderate levels in lymph node and appendix and at low levels in thymus and bone marrow (PubMed:10777209).
  • Sequence similarities
    Belongs to the bZIP family.
    Contains 1 bZIP (basic-leucine zipper) domain.
  • Post-translational
    Phosphorylated on serine and threonine residues and at least one tyrosine residue. Phosphorylation at Ser-43 inhibit DNA binding activity and transforms it as a negative regulator of AP-1 mediated transcription.
  • Cellular localization
    Nucleus. Cytoplasm. Present in the nucleus and cytoplasm, but shows increased nuclear translocation after activation of T-cells.
  • Information by UniProt
  • Database links
  • Alternative names
    • Activating transcription factor B antibody
    • B ATF antibody
    • B-ATF antibody
    • B-cell-activating transcription factor antibody
    • Basic leucine zipper transcription factor like antibody
    • Basic leucine zipper transcriptional factor ATF like antibody
    • Basic leucine zipper transcriptional factor ATF-like antibody
    • Batf antibody
    • BATF_HUMAN antibody
    • BATF1 antibody
    • SF HT activated gene 2 protein antibody
    • SF-HT-activated gene 2 protein antibody
    • SFA 2 antibody
    • SFA-2 antibody
    • SFA2 antibody
    see all


ab177241 has not yet been referenced specifically in any publications.

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