YY1 polyclonal antibody

YY1 (Yin Yang1) is a ubiquitously expressed transcription factor with fundamental roles in embryogenesis, differentiation, replication and proliferation. YY1 contains four zinc finger motifs of the Cys-Cys-His-His type and can activate different eukaryotic genes (such as CREB, c-myc, Histone H4, p53 and PARP-1) or repress different eukaryotic genes (such as α-actin, IFN-β and IFN-γ) as well as regulate some viral promoters. YY1 deficient embryos die approximately at the time of implantation, suggesting that YY1 has an essential role in embryonic development. YY1 is overexpressed in cancer cells such as prostate cancer and therefore may be considered a prognostic marker.