| Domain | Name | Category | Type |
| IPR002052 | DNA methylase, N-6 adenine-specific, conserved site | Site | Conserved site |
| IPR002295 | N6 adenine-specific DNA methyltransferase, D21 class | Family | Family |
| IPR004556 | Methyltransferase HemK-like | Family | Family |
| IPR007848 | Methyltransferase small domain | Domain | Domain |
| IPR019874 | Protein-(glutamine-N5) methyltransferase, release factor-specific | Family | Family |
| IPR029063 | S-adenosyl-L-methionine-dependent methyltransferase | Family | Homologous superfamily |
| IPR040758 | Release factor glutamine methyltransferase, N-terminal domain | Domain | Domain |