| CDS description | CDS accession | Island | Host Description |
|---|
| Transcription initiation factor IIB (TFIIB) | NC_014471:1269571:1294358 | NC_014471:1269571 | Ignisphaera aggregans DSM 17230 chromosome, complete genome |
| transcription initiation factor IIB (TFIIB) | NC_016645:1059482:1082513 | NC_016645:1059482 | Pyrobaculum sp. 1860 chromosome, complete genome |