| O28126 | DB00171 | 1r8b | ATP | A | 502 | e1r8bA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | DB00171 | 1tfw | ATP | B | 1501 | e1tfwB1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 1tfw | ATP | B | 1501 | e1tfwB3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 1tfw | ATP | D | 1502 | e1tfwD1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 1tfw | ATP | D | 1502 | e1tfwD3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 1uev | ATP | A | 501 | e1uevA1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 1uev | ATP | A | 501 | e1uevA3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 2dra | ATP | A | 501 | e2draA1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 2dra | ATP | A | 501 | e2draA3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 2zh6 | ATP | A | 501 | e2zh6A1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 2zh6 | ATP | A | 501 | e2zh6A3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 3ov7 | ATP | A | 501 | e3ov7A1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 3ov7 | ATP | A | 501 | e3ov7A3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 3ov7 | ATP | B | 502 | e3ov7B1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 3ov7 | ATP | B | 502 | e3ov7B3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 3ovb | ATP | A | 501 | e3ovbA1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 3ovb | ATP | A | 501 | e3ovbA3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 3ovb | ATP | B | 502 | e3ovbB1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | DB00171 | 3ovb | ATP | B | 502 | e3ovbB3 | Nucleotidyltransferase-like | Nucleotidyltransferase | Nucleotidyltransferase | NTP_transf_2 |
| O28126 | DB00171 | 3ovb | ATP | C | 851 | e3ovbA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |