Summary for clan M-
| Description | Families of metallopeptidases not assigned to clans | ||
Families
| Family | Family Type Peptidase | Structure |
| M73 | camelysin (Bacillus cereus) | - |
| M82 | PrsW peptidase (Bacillus subtilis) | - |
Distribution of clan M- among Kingdoms of Organisms
| Family | Bacteria | Archaea | Protozoa | Fungi | Plants | Animals | Viruses |
| M73 | - | - | - | - | - | - | - |
| M82 | - | - | - | - | - | - | - |
| Clan | - | - | - | - | - | - | - |
