Figure 2.
A. The Myc-Max heterodimer is shown to interact with key co-factors such as TFIIH that triggers transcriptional elongation or TRRAP that recruits the GCN5, which acetylates histone, permitting transcription of target genes. B. Myc-Max also mediates gene repression. Miz-1 is shown tethered to the INR element to regulate transcription of target genes, which could be silenced by Myc displacement of NPM, a Miz-1 cofactor, or by Myc induction of the ribosomal protein RPL23, which retains NPM in the nucleolus, keeping it away from Miz-1.