| C | N6_Mtase | e3wpoC1 | A: alpha arrays | X: Four-helical up-and-down bundle | H: N-terminal helical domain in restriction-modification system methylation subunit | T: N-terminal helical domain in restriction-modification system methylation subunit | F: N6_Mtase | ECOD (v295.2) |
| C | DapB_N | e3wpoC2 | A: alpha arrays | X: PriB N-terminal domain-like | H: Ubiquitin-related | T: Ubiquitin-like | F: DapB_N | ECOD (v295.2) |
| B | N6_Mtase | e3wpoB1 | A: alpha arrays | X: Four-helical up-and-down bundle | H: N-terminal helical domain in restriction-modification system methylation subunit | T: N-terminal helical domain in restriction-modification system methylation subunit | F: N6_Mtase | ECOD (v295.2) |
| B | DapB_N | e3wpoB2 | A: alpha arrays | X: PriB N-terminal domain-like | H: Ubiquitin-related | T: Ubiquitin-like | F: DapB_N | ECOD (v295.2) |
| A | N6_Mtase | e3wpoA1 | A: alpha arrays | X: Four-helical up-and-down bundle | H: N-terminal helical domain in restriction-modification system methylation subunit | T: N-terminal helical domain in restriction-modification system methylation subunit | F: N6_Mtase | ECOD (v295.2) |
| A | DapB_N | e3wpoA2 | A: alpha arrays | X: PriB N-terminal domain-like | H: Ubiquitin-related | T: Ubiquitin-like | F: DapB_N | ECOD (v295.2) |