| O28126 | n/a | 1r89 | NA | A | 603 | e1r89A2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 1r8a | NA | A | 605 | e1r8aA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 1r8b | NA | A | 605 | 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 | NA | A | 605 | e1r8cA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |