| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 3CCJ_9 | 27 | 3CCJ | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCL_0 | 53 | 3CCL | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCL_9 | 27 | 3CCL | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCM_0 | 53 | 3CCM | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCM_9 | 27 | 3CCM | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCQ_0 | 53 | 3CCQ | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCQ_9 | 27 | 3CCQ | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCR_0 | 53 | 3CCR | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCR_9 | 27 | 3CCR | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCS_0 | 53 | 3CCS | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCS_9 | 27 | 3CCS | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCU_0 | 53 | 3CCU | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCU_9 | 27 | 3CCU | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CCV_0 | 53 | 3CCV | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CCV_9 | 27 | 3CCV | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CD6_0 | 53 | 3CD6 | 23S RIBOSOMAL RNA | 2923 | RF02540 |
| 3CD6_9 | 27 | 3CD6 | 5S RIBOSOMAL RNA | 122 | RF00001 |
| 3CF5_X | 53 | 3CF5 | RRNA-23S RIBOSOMAL RNA | 2880 | RF02541 |
| 3CF5_Z | 27 | 3CF5 | RRNA-5S RIBOSOMAL RNA | 123 | RF00001 |
| 3CGP_A | 1 | 3CGP | RNA (5'-R(*GP*CP*GP*CP*GP*(PSU)P*AP*GP*UP*AP*GP*C)-3') | 12 | - |
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