| O28126 | n/a | 4x4q | PEG | A | 506 | e4x4qA3 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | n/a | 4x4q | PEG | A | 506 | e4x4qC1 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4q | PEG | C | 503 | e4x4qC1 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4r | PEG | C | 505 | e4x4rA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4r | PEG | C | 505 | e4x4rC3 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | n/a | 4x4s | PEG | A | 505 | e4x4sA3 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4s | PEG | A | 505 | e4x4sC1 | HhH/H2TH | SAM/DNA-glycosylase | PAP/OAS1 substrate-binding domain | tRNA_NucTransf2 |
| O28126 | n/a | 4x4t | PEG | E | 501 | e4x4tA3 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4t | PEG | E | 501 | e4x4tE3 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4u | PEG | C | 501 | e4x4uC2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4u | PEG | E | 502 | e4x4uA2 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |
| O28126 | n/a | 4x4u | PEG | E | 502 | e4x4uE3 | Alpha-beta plaits | PAP/Archaeal CCA-adding enzyme, C-terminal domain | PAP/Archaeal CCA-adding enzyme, C-terminal domain | CAA_C |