The S33-966 monoclonal antibody specifically binds to TCF-7 (Transcription factor 7) which is also known as TCF-1 (T-cell factor 1). TCF-7 is a member of the High Mobility Group (HMG) DNA binding protein family of transcription factors. TCF-7 is expressed in thymocytes, T lymphocytes and proliferating epithelial cells. TCF-7 is expressed in the earliest T cell precursors and serves as a critical transcriptional regulator that is involved in the differentiation of thymocytes to become mature T lymphocytes. TCF-7 is necessary for the survival of immature CD4+CD8+ thymocytes. TCF-7 can also promote the differentiation of mature peripheral T cells to become Th2-like cells. TCF-7 may also function as a transcriptional repressor of certain target genes including CTNNB1 and TCF7L2. The S33-966 antibody crossreacts with human TCF-7.
The antibody was conjugated to BD Horizon™ Red 718, which has been developed exclusively by for BD Biosciences as a better alternative to Alexa Fluor™ 700. BD Horizon™ Red 718 can be excited by the red laser (628 – 640 nm) and, with an Em Max around 718 nm, it can be detected using a 730/45 nm filter. Due to similar excitation and emission properties, we do not recommend using R718 in combination with APC-R700 or Alexa Fluor™ 700.