| [A] Pyrobaculum aerophilum | PYRAE00820 | Q8ZXN3 | Acylamino-acid-releasing enzyme, conjectural |
| [A] Pyrobaculum arsenaticum (strain DSM 13514 / JCM 11321) | PYRAR00366 | A4WHW7 | Peptidase S9, prolyl oligopeptidase active site domain protein |
| [A] Pyrobaculum calidifontis (strain JCM 11548 / VA1) | PYRCJ00759 | A3MU82 | Peptidase S9, prolyl oligopeptidase active site domain protein |
| [A] Pyrobaculum islandicum (strain DSM 4184 / JCM 9189) | PYRIL01287 | A1RU41 | Peptidase S9, prolyl oligopeptidase active site domain protein |
| [A] Thermoproteus neutrophilus (strain DSM 2338 / JCM 9278 / V24Sta) | THENV00235 | B1YB62 | Peptidase S9 prolyl oligopeptidase active site domain protein |
| [A] Halobacterium salinarium | HALSA00317 | Q9HS46 | Vng0409c |
| [A] Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1) | HALS300335 | B0R3A9 | Putative acylaminoacyl-peptidase |
| [A] Halorubrum lacusprofundi (strain ATCC 49239 / DSM 5036 / JCM 8891 / ACAM 34) | HALLT00573 | B9LTP9 | Peptidase S9 prolyl oligopeptidase active site domain protein |
| [B] Rubrobacter xylanophilus (strain DSM 9941 / NBRC 16129) | RUBXD00307 | Q1AZ90 | peptidase S9, prolyl oligopeptidase active site region PFAM: peptidase S15 peptidase S9, prolyl oligopeptidase active site region dienelactone hydrolase WD40-like beta Propeller KEGG: hma:rrnAC0178 prolyl oligopeptidase family protein |
| [B] Symbiobacterium thermophilum | SYMTH02071 | Q67MK6 | acylaminoacyl peptidase acylamino-acid-releasing enzyme |
| [B] Gloeobacter violaceus | GLOVI00176 | Q7NP81 | unknown protein |
| [B] Oceanobacillus iheyensis | OCEIH00466 | Q8ET03 | CDS_ID OB0462 acylamino-acid-releasing enzyme |
| [B] Brevibacillus brevis (strain 47 / JCM 6285 / NBRC 100599) | BREBN02673 | C0ZCZ7 | Putative uncharacterized protein |
| [B] Ochrobactrum anthropi (strain ATCC 49188 / DSM 6882 / NCTC 12168) | OCHA403039 | A6X3J0 | Peptidase S9 prolyl oligopeptidase active site domain protein |
| [B] Pseudoalteromonas atlantica (strain T6c / BAA-1087) | PSEA600193 | Q15ZG2 | Peptidase S9, prolyl oligopeptidase active site region precursor |