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Table 1 Composition of Experimental dataset with respect to Types of R-M systems recognizing the site. The same site could be recognized by R-M systems of different Types, as shown in the last three rows

From: Avoidance of recognition sites of restriction-modification systems is a widespread but not universal anti-restriction strategy of prokaryotic viruses

Type of REase Number of (site, genome) pairs Number of different sites Number of different genomes
I 23,223 202 1571
II 34,912 186 2767
IIG 2584 65 1081
IIM 975 6 628
III 3795 43 1050
IV 597 2 597
II and IIG 425 5 399
II and IIM 167 3 167
II and III 26 1 26