Jun Phospho (Ser73) Antibody from BIOLEGEND

c-Jun is the first oncogenic transcription factor ever discovered. It heterodimerizes with members of the Fos protein family, such as c-Fos, to form the AP-1 transcription factor complex, exhibiting both activating and repressive functions depending on the interacting partner and promoter sequence context. c-Jun is required for cell cycle progression, and is protective against DNA damage, such as that resulting from ultraviolet light exposure. c-Jun is also overexpressed in many cancers including lung, breast and vulvar cancer, and is a target for anti-cancer therapies. Phosphorylation of c-Jun at serine 63 and 73 is activational, and mediated by the MAPK signaling cascade.