Diagram of the HRI and ATF3 gene loci showing interactions of TFII-I, Pol II, E2F4, E2F6, and HDAC1 as well as RNA seq, and Pol II ChIA-PET data. The ChIA-PET data show interactions of chromatin fragments that have Pol II bound. The arrows indicate the direction of transcription of the HRI gene and from the two promoters of the ATF3 gene (P1 and P2).