| M01.004: leukotriene A4 hydrolase 1HS6_A |
 |
| M02.004: angiotensin-converting enzyme peptidase unit 2 1O8A |
 |
| M03.002: neurolysin 1I1I_P |
 |
| M04.001: thermolysin 1TLP |
 |
| M04.001: thermolysin 1NPC |
 |
| M04.005: pseudolysin 1EZM |
 |
| M07.001: snapalysin 1KUH |
 |
| M08.001: leishmanolysin 1LML |
 |
| M09.002: collagenase G/A (Clostridium histolyticum) 2Y6I |
 |
| M10.001: matrix metallopeptidase-1 1FBL |
 |
| M10.008: matrix metallopeptidase-7 1MMQ |
 |
| M10.054: peptidase C (Erwinia-type) 1K7G |
 |
| M12.001: astacin 1AST |
 |
| M12.141: adamalysin 1IAG |
 |
| M13.001: neprilysin 1DMT_A |
 |
| M27.002: bontoxilysin 1F82_A |
 |
| M32.002: carboxypeptidase Pfu 1K9X_A |
 |
| M34.001: anthrax lethal factor 1J7N_B |
 |
| M35.004: peptidyl-Lys metallopeptidase 1G12 |
 |
| M41.021: FtsH peptidase (Thermotoga-type) 2CE7 |
 |
| M90.001: MtfA peptidase 3KHI |
 |
