Extended Data Fig. 4: There is positional conservation of a putative Fnr binding site upstream of cas3 in 13 of 32 Enterobacteriaceae.
From: Anoxia activates CRISPR–Cas immunity in the mouse intestine

The position of putative Fnr binding sites relative to 553 Gammaproteobacteria cas3 orthologs, grouped by family. The number of genomes with at least one putative Fnr binding site in the 300 bp upstream of cas3 (numerator) and the number of genomes analyzed within the family (denominator) are next to the family’s name. Strains are listed in Supplementary Table 3 and putative Fnr binding sites are listed in Supplementary Table 4.