| CDS description | CDS accession | Island | Host Description |
|---|
| site-specific tyrosine recombinase XerS | NC_013792:109203:110086 | NC_013792:109203 | Bacillus pseudofirmus OF4 plasmid pBpOF4-01, complete sequence |
| site-specific tyrosine recombinase XerS | NC_021175:881845:914266 | NC_021175:881845 | Streptococcus oligofermentans AS 1.3089, complete genome |