| CDS description | CDS accession | Island | Host Description |
|---|
| Type IIG restriction-modification enzyme | NC_017365:1466500:1472607 | NC_017365:1466500 | Helicobacter pylori F30, complete genome |
| Type IIG restriction-modification enzyme | NC_017367:1505780:1511338 | NC_017367:1505780 | Helicobacter pylori F57, complete genome |
| Type IIG restriction-modification enzyme | NC_017367:1505780:1512425 | NC_017367:1505780 | Helicobacter pylori F57, complete genome |