PSAT1 and cancer: Given that mutp53 often binds DNA through interactions with specific transcription factors (TFs), we examined the TFs co-occuring in the same regions as the mutp53 ChIP-seq peaks for PSAT1, SLC7A5 and SLC3A2. We identified 10 putative TFs, including MYC/MAX, which has been reported to transcriptionally regulate several AAs-related genes and to interact with mutp53 in cancer (Suppl.