|
| Clan | Family | Peptidase type | Peptidase species | MEROPS ID | Number of clusters |
|
| MA | M1 | Aminopeptidase N | ERAP2 aminopeptidase | M01.024 | 5 |
| Slamdance (D. melanogaster) | M01.A02 | 2 |
| CG5845 protein (D. melanogaster) | M01.A05 | 1 |
| CG11956 protein (D. melanogaster) | M01.A09 | 6 |
| Dgri protein (D. melanogaster) | M01.A10 | 2 |
| CG8774 protein (D. melanogaster) | M01.A11 | 3 |
| CG8773 protein (D. melanogaster) | M01.A12 | 1 |
| AT4g33090 g.p. (Arabidopsis thaliana) | M01.A25 | 6 |
| Family M1 nonpeptidase homologues | M01.UNW | 3 |
| Family M1 unassigned peptidases | M01.UPW | 4 |
|
| MA | M2 | Angiotensin-converting enzyme peptidase unit 1 | Peptidyl-dipeptidase Ance | M02.003 | 16 |
| Family M2 nonpeptidase homologues | M02.UNW | 6 |
| Family M2 unassigned peptidases | M02.UPW | 4 |
|
| MA | M3 | Thimet oligopeptidase | Subfamily M3A nonpeptidase homologues | M03.UNA | 1 |
| Subfamily M3A unassigned peptidases | M03.UPA | 1 |
|
| MA | M8 | Leishmanolysin | Family M8 unassigned peptidases | M08.UPW | 2 |
|
| MA | M10 | Matrix metallopeptidase-1 | Dm1 matrix metallopeptidase | M10.031 | 2 |
| Dm2-matrix metallopeptidase | M10.036 | 2 |
|
| MA | M12 | Astacin | Mammalian-type tolloid-like 2 protein | M12.018 | 1 |
| ADM-4 peptidase (Caenorhabditis elegans) | M12.329 | 1 |
| ADAMTS-A (D. melanogaster) | M12.A03 | 1 |
| CG4096 protein (D. melanogaster) | M12.A04 | 2 |
| CG4096 protein (D. melanogaster) | M12.A05 | 1 |
| CG6696 protein (D. melanogaster) | M12.A08 | 1 |
| CG15254 protein (D. melanogaster) | M12.A09 | 1 |
| Subfamily M12A unassigned peptidases | M12.UPA | 10 |
| Subfamily M12B unassigned peptidases | M12.UPB | 8 |
|
| MA | M13 | Neprilysin | Zmp1 peptidase (Mycobacterium-type) | M13.009 | 2 |
| Nep2 peptidase (insect) | M13.012 | 2 |
| Neprilysin-4 (D. melanogaster) | M13.014 | 2 |
| CG3775 protein (D. melanogaster) | M13.A01 | 2 |
| CG14526 protein (D. melanogaster) | M13.A04 | 2 |
| CG14528 protein (D. melanogaster) | M13.A06 | 1 |
| CG9507 protein (D. melanogaster) | M13.A11 | 2 |
| CG5894 protein (D. melanogaster) | M13.A15 | 2 |
| Family M13 nonpeptidase homologues | M13.UNW | 6 |
| Family M13 unassigned peptidases | M13.UPW | 13 |
|
| MA | M41 | FtsH peptidase | Paraplegin | M41.006 | 1 |
| YME1L1 g.p. (Homo sapiens) and similar | M41.026 | 1 |
| Family M41 nonpeptidase homologues | M41.UNW | 1 |
|
| MA | M48 | Ste24 peptidase | CG9001 protein (D. melanogaster) | M48.A06 | 2 |
|
| MA | M49 | Dipeptidyl-peptidase III | CG7415 g.p. (D. melanogaster) | M49.A01 | 2 |
|
| MC | M14 | Carboxypeptidase A1 | CG8560 protein (D. melanogaster) | M14.A04 | 2 |
| CG2915 protein (D. melanogaster) | M14.A05 | 6 |
| CG17633 protein (D. melanogaster) | M14.A08 | 1 |
| CG14820 protein (D. melanogaster) | M14.A12 | 2 |
| CG8562 protein (D. melanogaster) | M14.A15 | 1 |
| CG18417 protein (D. melanogaster) | M14.A16 | 1 |
| CG3097 protein (D. melanogaster) | M14.A19 | 1 |
| Silver protein domain 2 (D. melanogaster) | M14.A20 | 2 |
| CG11428 (D. melanogaster) | M14.A21 | 2 |
| Subfamily M14A nonpeptidase homologues | M14.UNA | 1 |
| Subfamily M14A unassigned peptidases | M14.UPA | 11 |
| Subfamily M14B unassigned peptidases | M14.UPB | 3 |
|
| ME | M16 | Pitrilysin | Mitochondrial processing peptidase beta-subunit | M16.003 | 1 |
| Eupitrilysin | M16.009 | 1 |
| Mername-AA224 nonpeptidase homologue | M16.975 | 2 |
| CG2025 protein (D. melanogaster) | M16.A06 | 3 |
| C02G6.1 g.p. (C. elegans) | M16.A08 | 1 |
| LOC133083 g.p. (H. sapiens) | M16.P01 | 2 |
|
| MF | M17 | Leucine aminopeptidase 3 | Leucyl aminopeptidase-1 (Caenorhabditis-type) | M17.006 | 2 |
| Leucine aminopeptidase (Fasciola-type) | M17.011 | 2 |
|
| MG | M24 | Methionyl aminopeptidase 1 | Xaa-Pro dipeptidase (eukaryote) | M24.007 | 2 |
| Methionyl aminopeptidase 1 (eukaryote) | M24.017 | 1 |
| Subfamily M24B nonpeptidase homologues | M24.UNB | 1 |
| Family M24 nonpeptidase homologues | M24.UNW | 1 |
| Subfamily M24A unassigned peptidases | M24.UPA | 2 |
| Subfamily M24B unassigned peptidases | M24.UPB | 2 |
|
| MH | M20 | Glutamate carboxypeptidase | Peptidase T | M20.003 | 1 |
|
| | M28 | Aminopeptidase S | Aminopeptidase ES-62 (Acanthocheilonema viteae) | M28.A15 | 1 |
| Family M28 unassigned peptidases | M28.UPW | 6 |
|
| MJ | M19 | Membrane dipeptidase | Family M19 nonpeptidase homologues | M19.UNW | 1 |
|
| MM | M50 | Site 2 peptidase | dS2P peptidase (D. melanogaster) | M50.007 | 1 |
|
| MP | M67 | RPN11 peptidase | At1g71230 (A. thaliana) | M67.A02 | 1 |
|
| UNA | M79 | RCE1 peptidase | RCE1 peptidase (H. sapiens-type) | M79.002 | 1 |
|
