| CDS description | CDS accession | Island | Host Description |
|---|
| 20S proteasome beta-subunit | NC_014215:1243125:1265991 | NC_014215:1243125 | Propionibacterium freudenreichii subsp. shermanii CIRM-BIA1, |
| 20S proteasome beta-subunit | NC_003155:7979050:7992894 | NC_003155:7979050 | Streptomyces avermitilis MA-4680, complete genome |
| 20S proteasome beta-subunit precursor | NC_003888:1751179:1758475 | NC_003888:1751179 | Streptomyces coelicolor A3(2), complete genome |
| Peptidase T1A, 20S proteasome beta-subunit (psmB) | NC_012804:1940500:1952713 | NC_012804:1940500 | Thermococcus gammatolerans EJ3, complete genome |