| CDS description | CDS accession | Island | Host Description |
|---|
| xanthine dehydrogenase iron-sulfur binding subunit | NC_013315:2232339:2241914 | NC_013315:2232339 | Clostridium difficile CD196 chromosome, complete genome |
| xanthine dehydrogenase iron-sulfur binding subunit | NC_013316:2309694:2322468 | NC_013316:2309694 | Clostridium difficile R20291, complete genome |