| Domain | Name | Category | Type |
| IPR001930 | Peptidase M1, alanine aminopeptidase/leukotriene A4 hydrolase | Family | Family |
| IPR014782 | Peptidase M1, membrane alanine aminopeptidase | Domain | Domain |
| IPR015211 | Peptidase M1, leukotriene A4 hydrolase/aminopeptidase C-terminal | Domain | Domain |
| IPR016024 | Armadillo-type fold | Family | Homologous superfamily |
| IPR027268 | Peptidase M4/M1, CTD superfamily | Family | Homologous superfamily |
| IPR033525 | Aminopeptidase RNPEPL1 | Family | Family |
| IPR034015 | Aminopeptidase, leukotriene A4 hydrolase-like | Family | Family |
| IPR038502 | Peptidase M1, LTA-4 hydrolase/aminopeptidase, C-terminal domain superfamily | Family | Homologous superfamily |
| IPR042097 | Aminopeptidase N-like , N-terminal | Family | Homologous superfamily |