| ID | Fold | PDBID | PDB annotation | Length | RFam ID |
| 4YB1_R | 323 | 4YB1 | RNA (91-MER) | 91 | RF01051 |
| 4YBB_AA | 56 | 4YBB | 16S rRNA | 1534 | RF00177 |
| 4YBB_BA | 56 | 4YBB | 16S rRNA | 1534 | RF00177 |
| 4YBB_CA | 53 | 4YBB | 23S rRNA | 2904 | RF02541 |
| 4YBB_CB | 27 | 4YBB | 5S rRNA | 120 | RF00001 |
| 4YBB_DA | 53 | 4YBB | 23S rRNA | 2903 | RF02541 |
| 4YBB_DB | 27 | 4YBB | 5S rRNA | 120 | RF00001 |
| 4YCO_D | 14 | 4YCO | tRNAphe | 76 | RF00005 |
| 4YCO_E | 14 | 4YCO | tRNAphe | 76 | RF00005 |
| 4YCO_F | 14 | 4YCO | tRNAphe | 76 | RF00005 |
| 4YCP_B | 14 | 4YCP | tRNATrp | 76 | RF00005 |
| 4YHH_A | 56 | 4YHH | 16S ribosomal RNA | 1507 | RF00177 |
| 4YHW_C | 1 | 4YHW | U4 snRNA fragment | 17 | - |
| 4YHW_D | 1 | 4YHW | U4 snRNA fragment | 17 | - |
| 4YHW_E | 1 | 4YHW | U6 snRNA fragment | 27 | - |
| 4YHW_F | 1 | 4YHW | U6 snRNA fragment | 27 | - |
| 4YN6_A | 1 | 4YN6 | RNA (5'-R(P*UP*UP*GP*GP*GP*CP*CP*AP*GP*CP*AP*GP*CP*AP*GP*GP*UP*CP*C)-3') | 19 | - |
| 4YN6_B | 1 | 4YN6 | RNA (5'-R(P*UP*UP*GP*GP*GP*CP*CP*AP*GP*CP*AP*GP*CP*AP*GP*GP*UP*CP*C)-3') | 19 | - |
| 4YPB_QA | 56 | 4YPB | 16S rRNA | 1522 | RF00177 |
| 4YPB_QV | 14 | 4YPB | tRNA fMet | 77 | RF00005 |
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