c-Jun is a component of the transcription factor AP-1, which binds and activates transcription at TRE/AP-1 elements. The c-Jun oncogene encodes a nuclear protein, p39, that interacts with the AP-1 c-Fos oncogene product and forms a transacting heterodimer. c-Jun plays an important role in the regulation of gene expression and signal transduction processes and is also suggested to be actively involved in the differentiation of B-chronic lymphocytic leukemia cells and Hodgkin’s Reed-Sternberg cells as well as in the malignant transformation of melanocytes, which makes it a promising drug target.


