CRISPR arrays form the physical memory of prokaryotic adaptive immune systems by incorporating viral DNA sequences as spacers. Here, Blombach et al. show that transcription factor Cbp1 recruits chromatin protein Cren7 at CRISPR arrays, forming ‘chimeric’ chromatin-like structures that regulate expression of long CRISPR arrays in Sulfolobales archaea.
- Fabian Blombach
- Michal Sýkora
- Finn Werner
