| O28126 | n/a | 1r89 | MN | A | 604 | e1r89A3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | n/a | 1r8a | MN | A | 604 | e1r8aA3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | n/a | 1r8b | MN | A | 601 | e1r8bA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 1r8c | MN | A | 604 | e1r8cA3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | n/a | 3ov7 | MN | A | 701 | e3ov7A3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | n/a | 4x4o | MN | A | 502 | e4x4oA2 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | n/a | 4x4o | MN | C | 502 | e4x4oC3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |